簡單的自定義 View,xmlns 作用，屬性動畫。

實作TextView拖拽顯示

補充：getRawX和get的差別

簡單的自定義 View

xmlns 作用

Android attrs檔案（自定義）屬性詳解

補充：drawable 轉bitmap 空指針

補充:setColor方法：設定顔色

屬性定義時可以同時定義多種類型值

屬性動畫：

Android動态添加View之addView

自定義樣式和主題

實作TextView拖拽顯示

layout：

<LinearLayout
    android:id="@+id/rl"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:background="@drawable/logo"
        android:text="張"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintHorizontal_bias="0.497"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintVertical_bias="0.425"

new View.OnTouchListener() {
            int orgX, orgY;
            int offsetX, offsetY;

            @Override
            public boolean onTouch(View v, MotionEvent event) {
                switch (event.getAction()) {
                    case MotionEvent.ACTION_DOWN:
                        orgX = (int) event.getX();
                        orgY = (int) event.getY();
                        Log.d("TAG", "onTouch: orgX=="+orgX);
                        Log.d("TAG", "onTouch: orgY=="+orgY);
                        break;
                    case MotionEvent.ACTION_MOVE:
                        offsetX = (int) event.getRawX() - orgX;
                        offsetY = (int) event.getRawY() - orgY;
                        Log.d("TAG", "onTouch: event.getRawX()=="+event.getRawX());
                        Log.d("TAG", "onTouch: event.getRawY()=="+event.getRawY());
                        Log.d("TAG", "offsetX: offsetX=="+offsetX);
                        Log.d("TAG", "offsetY: offsetY=="+offsetY);
                        LinearLayout.LayoutParams p1 = (LinearLayout.LayoutParams) relativeLayout.getLayoutParams();
                        p1.topMargin = offsetY;//設定像素
                        p1.leftMargin = offsetX;//設定像素
                        relativeLayout.setLayoutParams(p1);
                        break;
                }
                return true;
            }
        });

補充：getRawX和get的差別

getX()是表示Widget相對于自身左上角的x坐标。

getRawX()是表示相對于螢幕左上角的x坐标值，這個螢幕左上角是手機螢幕左上角,不管activity是否有titleBar或是否全螢幕。

簡單的自定義 View

package com.example.ceshi;

import android.content.Context;
import android.content.res.TypedArray;


/**
 * @ProjectName: ceshi
 * @Package: com.example.ceshi
 * @ClassName: MyView
 * @Description: java類作用描述
 * @Author: 作者名
 * @CreateDate: 2020/7/30 0030 下午 5:22
 * @UpdateUser: 更新者：
 * @UpdateDate: 2020/7/30 0030 下午 5:22
 */

public class MyView extends View {
    private Paint myPaint;
    private Paint myPaint1;
    private static final String myString = "Hello CustomView!";

    public MyView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }

    int bg;
    String text;
    int textColor1;

    public MyView(Context context, AttributeSet attr) {
        super(context, attr);
        myPaint = new Paint();
        TypedArray a = context.obtainStyledAttributes(attr, R.styleable.myView);//TypedArray是一個數組容器
        float textSize = a.getDimension(R.styleable.myView_textSize, 30);//防止在XML檔案裡沒有定義，就加上了預設值30
        int textColor = a.getColor(R.styleable.myView_textColor, 0x34343434);//同上,這裡的屬性是:名字_屬性名
        textColor1 = a.getColor(R.styleable.myView_textColor1, 0x34343434);//同上,這裡的屬性是:名字_屬性名
        bg = a.getColor(R.styleable.myView_backg, 0xdd0000);//同上,這裡的屬性是:名字_屬性名
        text = a.getString(R.styleable.myView_text);
        myPaint.setTextSize(textSize);
        myPaint.setColor(textColor);
        a.recycle();//我的了解是：
        // 傳回以前取回的屬性，供以後使用。以前取回的可能就是textSize和textColor初始化的那段
    }

    /**
     * @param
    @Override
    protected void onDraw(Canvas canvas) {
        // TODO Auto-generated method stub
        super.onDraw(canvas);
        myPaint1 = new Paint();
        myPaint1.setColor(textColor1);
        myPaint1.setColor(Color.BLUE);
        canvas.drawCircle(500, 500, 200, myPaint1);
        canvas.drawCircle(500, 500, 100, myPaint);
        canvas.drawText(text, 0, 0, myPaint);
    }
}

layout：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tes="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <com.example.ceshi.MyView
        android:id="@+id/mv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        tes:text="zhangjiqun"
        tes:textColor="#ff0000"
        tes:textColor1="#FFF283"
        tes:textSize="50px">

        <TextView
            android:id="@+id/tv"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="張"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintHorizontal_bias="0.497"
            app:layout_constraintLeft_toLeftOf="parent"
            app:layout_constraintRight_toRightOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintVertical_bias="0.425"
            tools:text="張 "

調用并實作動畫：

package com.example.ceshi;

import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;

/**
 *
 */
public class MainActivity extends AppCompatActivity   {

    private TextView tv;

    Handler handler = new Handler() {
        @Override
        public void handleMessage(@NonNull Message msg) {
            super.handleMessage(msg);
            switch (msg.what) {
                case 1:
                    tv.setText(111 + "");
                    break;
                case 2:
                    tv.setText(222 + "");
                    break;
                case 3:
                    tv.setText(333 + "");
                    break;
                case 4:
                    tv.setText(444 + "");
                    break;
                case 5:
                    tv.setText(555 + "");
                    break;
            }
        }
    };
    private ProgressDialog processDialog;

    /**
     * @param savedInstanceState
     */
    @RequiresApi(api = Build.VERSION_CODES.KITKAT)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tv = (TextView) findViewById(R.id.tv);
        final MyView myView=findViewById(R.id.mv);
        myView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(MainActivity.this,"123",
                        Toast.LENGTH_SHORT).show();
            }
        });
        handler.sendEmptyMessageDelayed(1, 1000);
        handler.sendEmptyMessageDelayed(2, 2000);
        handler.sendEmptyMessageDelayed(3, 3000);
        handler.sendEmptyMessageDelayed(4, 4000);
        handler.sendEmptyMessageDelayed(5, 5000);

        tv.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this, MainActivityt.class);
                startActivity(intent);

            }
        });
        ObjectAnimator objectAnimator=ObjectAnimator.ofFloat(
                myView, "alpha", 1f, 0f, 1f);
        objectAnimator.setDuration(2000).setStartDelay(100); ;
        objectAnimator.setRepeatCount(1000);
        objectAnimator.setRepeatMode(ValueAnimator.RESTART);
        objectAnimator.start();

        ObjectAnimator objectAnimator1=ObjectAnimator.ofFloat(myView,
                "rotation",0f,360f);
        myView.setPivotX(400);
        myView.setPivotY(400);
        objectAnimator1.setRepeatCount(1000);
        objectAnimator1.setDuration(500).start();
        float fl=myView.getTranslationX();

        ObjectAnimator objectAnimator2=ObjectAnimator.ofFloat(myView,
                "scale",1f,3f,1f);
        objectAnimator2.setDuration(2000).setRepeatCount(2000);
        objectAnimator2.start();
        ObjectAnimator objectAnimator3=ObjectAnimator.ofFloat(myView,
                "scaleX",1f,3f,1f);
        objectAnimator3.setDuration(2000).setRepeatCount(2000);
        objectAnimator3.start();
        String a = "123";
        tv.setText(a);
        try {

            Test();
        } catch ( ServiceException e ) {
//            e.printStackTrace();
            waitCloseAlert("執行線程異常,原因："+e.getMessage());
        }
    }

    public static void Test()throws ServiceException
    {
        throw new ServiceException("怎麼說");

    }

    /**
     * 關閉等待警告提示
     * */
    public void waitCloseAlert(final String message) {
        MainActivity.this.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                if (processDialog != null && processDialog.isShowing()) {
                    processDialog.dismiss();
                }
                showAlertDialog(message,null,R.drawable.ic_launcher_background,null);
            }
        });
    }
    public void showAlertDialog(String title,String message,Integer icon,final View focusView){
        AlertDialog.Builder builder=new AlertDialog.Builder(this);
        if(title!=null){
            builder.setTitle(title);
        }
        if(message!=null){
            builder.setMessage(message);
        }
        if(icon!=null){
            builder.setIcon(icon);
        }
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                if(focusView!=null){
                    focusView.requestFocus();
                }
            }
        });
        AlertDialog dialog = builder.create();
        dialog.show();
    }

}

xmlns 作用

xmlns:android="schemas.android.com/apk/res/and…

這個是xml的命名空間，也可以了解為文法檔案。或者文法判斷器什麼的；
這個主要作用是在運作的時候那些控件的屬性都是通過它來識别的，如果上面你寫錯了，不會有任何問題，但是在運作的時候就會有問題，提示你沒有指定寬度等什麼。這個是不用聯網的。

自定義xmlns：xmlns:tes="http://schemas.android.com/apk/res-auto"

xmlns 使用，下面有兩種形式，現在一般使用直接 res-auto;

Android attrs檔案（自定義）屬性詳解

<!-- declare-styleable表示為自定義的屬性-->
<!-- format表示為可接受的參數類型-->
<!--integer int型-->
<!--boolean boolean-->
<!--color 顔色-->
<!--dimension 尺寸-->
<!--enum 枚舉-->
<!--flag 位或運算-->
<!--float float型-->
<!--fraction 百分數-->
<!--reference 資源檔案-->
<!--string 字元串-->
<declare-styleable name="MyView">
    <attr name="a" format="integer"></attr>
    <attr name="b" format="boolean"></attr>
    <attr name="c" format="color"></attr>
    <attr name="d" format="dimension"></attr>
    <attr name="e"></attr>
    <attr name="f"></attr>
    <attr name="g" format="float"></attr>
    <attr name="h" format="fraction"></attr>
    <attr name="i" format="reference"></attr>
    <attr name="j" format="string"></attr>
</declare-styleable>
<attr name="e">
    <enum name="e1" value="1"></enum>
    <enum name="e2" value="2"></enum>
</attr>
<attr name="f">
    <flag name="f1" value="1"></flag>
    <flag name="f2" value="2"></flag>
</attr>

在layout頭部設定：

xmlns:tes="http://schemas.android.com/apk/res-auto"

使用：

tes:textColor="#ff0000"

1 reference：參考某一資源ID

主要是使用一些圖檔資源的時候使用reference；

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <declare-styleable name="myView">
        <attr name="backg" format="color" />
        <attr name="textColor" format="color"  />
        <attr name="textColor1" format="color"  />
        <attr name="textSize" format="dimension" />
        <attr name="text" format="string" />
        <attr name="draw" format="reference" />
    </declare-styleable>
</resources>


layout：

    <com.example.ceshi.MyView
        android:id="@+id/mv"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        tes:draw="@drawable/ic_launcher_background"
        tes:text="zhangjiqun"
        tes:textColor="#ff0000"
        tes:textColor1="#FFF283"
        tes:textSize="50px">

    </com.example.ceshi.MyView>

draw = a.getResourceId(R.styleable.myView_draw, R.drawable.ic_launcher_background);
Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher_background);
canvas.drawBitmap(mBitmap,100,100,myPaint);

整體：

package com.example.ceshi;

import android.content.Context;


/**
 * @ProjectName: ceshi
 * @Package: com.example.ceshi
 * @ClassName: MyView
 * @Description: java類作用描述
 * @Author: 作者名
 * @CreateDate: 2020/7/30 0030 下午 5:22
 * @UpdateUser: 更新者：
 * @UpdateDate: 2020/7/30 0030 下午 5:22
 */

public class MyView extends View {
    private Paint myPaint;
    private Paint myPaint1;
    private static final String myString = "Hello CustomView!";

    public MyView(Context context) {
        super(context);
        // TODO Auto-generated constructor stub
    }

    int bg;
    String text;
    int textColor1;
    int draw;
    public MyView(Context context, AttributeSet attr) {
        super(context, attr);
        myPaint = new Paint();
        TypedArray a = context.obtainStyledAttributes(attr, R.styleable.myView);//TypedArray是一個數組容器
        float textSize = a.getDimension(R.styleable.myView_textSize, 30);//防止在XML檔案裡沒有定義，就加上了預設值30
        int textColor = a.getColor(R.styleable.myView_textColor, 0x34343434);//同上,這裡的屬性是:名字_屬性名
        draw = a.getResourceId(R.styleable.myView_draw, R.drawable.ic_launcher_background);//同上,這裡的屬性是:名字_屬性名

        textColor1 = a.getColor(R.styleable.myView_textColor1, 0x34343434);//同上,這裡的屬性是:名字_屬性名
        bg = a.getColor(R.styleable.myView_backg, 0xdd0000);//同上,這裡的屬性是:名字_屬性名
        text = a.getString(R.styleable.myView_text);
        myPaint.setTextSize(textSize);
        myPaint.setColor(textColor);
        a.recycle();//我的了解是：
        // 傳回以前取回的屬性，供以後使用。以前取回的可能就是textSize和textColor初始化的那段
    }

    /**
     * @param canvas
     */
    @Override
    protected void onDraw(Canvas canvas) {
        // TODO Auto-generated method stub
        super.onDraw(canvas);
        myPaint1 = new Paint();
        myPaint1.setColor(textColor1);
        myPaint1.setColor(Color.BLUE);
        canvas.drawCircle(500, 500, 200, myPaint1);
        canvas.drawCircle(500, 500, 100, myPaint);
        canvas.drawText(text, 0, 0, myPaint);
        Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), draw);
        canvas.drawBitmap(mBitmap,100,100,myPaint);

補充：drawable 轉bitmap 空指針

Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher_background);

上面這個是空指針，原因是這個資源檔案是xml；

Bitmap mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.logo);

是以這個BitmapFactory必須使用圖檔資源才是可以的；

2 color：顔色值

name = "名稱">
       <attr name = "textColor" format = "color" />
</declare-styleable>

eg:


 <TextView
     android:layout_width = "42dip"
     android:layout_height = "42dip"
     android:textColor = "#00FF00"

補充:setColor方法：設定顔色

Color.RED：紅色。

Color.TRANSPARENT：透明。

Color.WHITE：白色。



RGB顔色設定方法

setColor(new Color(int r,int g,int b))

例如  setColor（new Color(220,255,220)）

3 boolean：布爾值

name = "名稱">
      <attr name = "focusable" format = "boolean" />
</declare-styleable>

eg:


<Button
    android:layout_width = "42dip"
    android:layout_height = "42dip"
    android:focusable = "true"/>

4 dimension：尺寸值

name = "名稱">
     <attr name = "layout_width" format = "dimension" />
</declare-styleable>

eg:

<com.lizi.newset.CustomView.attrs.MyView
        android:id="@+id/myView"
        android:layout_height="match_parent"
        android:layout_width="wrap_content"
        test:textSize="50px"
        test:textColor="#ff00ff"/>

5 float：浮點值

name = "AlphaAnimation">
      <attr name = "fromAlpha" format = "float" />
      <attr name = "toAlpha" format = "float" />
</declare-styleable>

eg:


<alpha
       android:fromAlpha = "1.0"
       android:toAlpha = "0.7"

6 string：字元串

name = "MapView">
     <attr name = "apiKey" format = "string" />
</declare-styleable>

eg:


<com.google.android.maps.MapView
         android:layout_width = "fill_parent"
         android:layout_height = "fill_parent"
         android:apiKey = "0jOkQ80oD1JL9C6HAja99uGXCRiS2CGjKO_bc_g"

7 integer：整型值 || fraction：百分數

name = "AnimatedRotateDrawable">
      <attr name = "visible" />
      <attr name = "frameDuration" format="integer" />
      <attr name = "framesCount" format="integer" />
      <attr name = "pivotX"  format = "fraction"/>
      <attr name = "pivotY"  format = "fraction"/>
      <attr name = "drawable" />
</declare-styleable>

eg:


<animated-rotate
      xmlns:android = "http://schemas.android.com/apk/res/android"
      android:drawable = "@drawable/圖檔ID"
      android:pivotX = "50%"
      android:pivotY = "50%"
      android:framesCount = "12"
      android:frameDuration = "100"

8 enum：枚舉值

name="名稱">
                   <attr name="orientation">
                          <enum name="horizontal" value="0" />
                          <enum name="vertical" value="1" />
                   </attr>
</declare-styleable>

eg:


<LinearLayout
                    xmlns:android = "http://schemas.android.com/apk/res/android"
                    android:orientation = "vertical"
                    android:layout_width = "fill_parent"
                    android:layout_height = "fill_parent"

9 flag 位或運算

name="名稱">
                    <attr name="windowSoftInputMode">
                            <flag name = "stateUnspecified" value = "0" />
                            <flag name = "stateUnchanged" value = "1" />
                            <flag name = "stateHidden" value = "2" />
                            <flag name = "stateAlwaysHidden" value = "3" />
                            <flag name = "stateVisible" value = "4" />
                            <flag name = "stateAlwaysVisible" value = "5" />
                            <flag name = "adjustUnspecified" value = "0x00" />
                            <flag name = "adjustResize" value = "0x10" />
                            <flag name = "adjustPan" value = "0x20" />
                            <flag name = "adjustNothing" value = "0x30" />
                     </attr>
</declare-styleable>

eg:


<activity
      android:name = ".StyleAndThemeActivity"
      android:label = "@string/app_name"
      android:windowSoftInputMode = "stateUnspecified | stateUnchanged　|　stateHidden">
      <intent-filter>
            <action android:name = "android.intent.action.MAIN" />
            <category android:name = "android.intent.category.LAUNCHER"

屬性定義時可以同時定義多種類型值

name = "名稱">
      <attr name = "background" format = "reference|color" />
</declare-styleable>

eg:


<ImageView
        android:layout_width = "42dip"
        android:layout_height = "42dip"
        android:background = "@drawable/圖檔ID|#00FF00"

Error:(246, 5) error: invalid value '??' for ; must be an integer.

這個錯诶就是在attrs中你有的地方指派類型不對，仔細看看，我的是有一個空格，但是類型是int；仔細檢查；

Error:(369) duplicate value for resource 'attr/background' with config ''.

這是由于background這個值重複了，一般的都有這個數值，你改個名字；

屬性動畫：

旋轉，縮放，透明度

objectAnimator=ObjectAnimator.ofFloat(
                myView, "alpha", 1f, 0f, 1f);
        objectAnimator.setDuration(2000).setStartDelay(100); ;
        objectAnimator.setRepeatCount(1000);
        objectAnimator.setRepeatMode(ValueAnimator.RESTART);
        objectAnimator.start();

        ObjectAnimator objectAnimator1=ObjectAnimator.ofFloat(myView,
                "rotation",0f,360f);
        myView.setPivotX(400);
        myView.setPivotY(400);
        objectAnimator1.setRepeatCount(1000);
        objectAnimator1.setDuration(500).start();
        float fl=myView.getTranslationX();

        ObjectAnimator objectAnimator2=ObjectAnimator.ofFloat(myView,
                "scale",1f,3f,1f);
        objectAnimator2.setDuration(2000).setRepeatCount(2000);
        objectAnimator2.start();
        ObjectAnimator objectAnimator3=ObjectAnimator.ofFloat(myView,
                "scaleX",1f,3f,1f);
        objectAnimator3.setDuration(2000).setRepeatCount(2000);
        objectAnimator3.start();

Android動态添加View之addView

layout:

id="@+id/content"
        android:layout_width="match_parent"
        android:layout_height="66dp"
        android:orientation="horizontal">

    </LinearLayout>

代碼實作：

/**
     * 按鈕點選事件，向容器中添加TextView
     * @param
     */
    public void addView() {
        TextView child = new TextView(this);
        child.setTextSize(20);
        child.setTextColor(getResources().getColor(R.color.colorAccent));
        // 擷取目前的時間并轉換為時間戳格式, 并設定給TextView
        child.setText("321");
        // 調用一個參數的addView方法
        mContainer.addView(child);
    }

自定義樣式和主題

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar"><!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item></style>
    <style name="CeShiTheme" parent="AppTheme"><item name="android:typeface">monospace</item></style>
    <style name="my_Style"><!-- 定義與指定View相關的若幹屬性 -->
        <item name="android:hint">load from style 1</item></style>
    <!-- 定義my_style_1，沒有指定parent，用系統預設的 -->
    <style name="my_style_1"><!-- 定義與指定View相關的若幹屬性 -->
        <item name="android:hint">load from style 1</item></style>

    <!-- 定義my_style_2，用自定義的my_style_1作為parent -->
    <style name="my_style_2" parent="@style/my_style_1"><!-- 定義與指定View相關的若幹屬性 -->
        <item name="android:textSize">30sp</item>
        <item name="android:textColor">#FFFF0000</item>
        <item name="android:hint">load from style 2</item></style>

    <!-- 定義my_style_3，用android的EditText作為parent -->
    <style name="my_style_3" parent="@android:style/Widget.EditText"><!-- 定義與指定View相關的若幹屬性 -->
        <item name="android:hint">"load from style 3"</item>
        <item name="android:textStyle">bold|italic</item>
        <item name="android:typeface">monospace</item>>
        <item name="android:background">@drawable/logo</item></style>

    <!-- 定義MyTheme，用android的Theme作為parent -->
    <style name="MyTheme" parent="@android:style/Theme"><item name="android:textSize">20sp</item>
        <item name="android:textColor">#FF0000FF</item>
        <item name="android:hint">"load from style 3"</item>
        <item name="android:textStyle">bold|italic</item>
        <item name="android:typeface">monospace</item>>
        <item name="android:background">@drawable/logo</item></style>
</resources>

簡單的自定義 View,xmlns 作用，屬性動畫。

實作TextView拖拽顯示

補充：getRawX和get的差別

簡單的自定義 View

xmlns 作用

Android attrs檔案（自定義）屬性詳解

補充：drawable 轉bitmap 空指針

補充:setColor方法：設定顔色

屬性定義時可以同時定義多種類型值

屬性動畫：

Android動态添加View之addView

自定義樣式和主題

繼續閱讀

mvp初探

Android常用工具類簡介目錄

android常用工具類轉載自：http://www.trinea.cn/android/android-common-utils/Android常用工具類

Android常用工具類ToastUtilsSizeUtilsLogUtilsRetrofitManagerAnimUtil

磁盤結構及在Linux中的命名

SIP Presence SUBSCRIBE-NOTIFY

QName是什麼

Android Studio 0.8.0解決 Failure [INSTALL_FAILED_OLDER_SDK] 問題

Android – ListView 中添加按鈕，動态删除添加ItemView的操作

Kotlin的ListView與RecyclerView的簡單應用

關于公司的那些坑：Android Studio篇

android SQLite事務和kotlin協程

無法正常編譯錯誤Compilation failed to complete

關于Gradle配置的小結

AOP程式設計_Android優雅權限架構(1)概念基礎，2021金三銀四前言正文大綱正文

Android APK檔案反編譯Android APK檔案反編譯