最近項目有用到h5調原生檔案的需求,正好好久沒寫文章,順便記錄一下,友善大家用到
用的是原生webView,4.4以後android官方用chrome核心替代原有核心,速度還是可以的,當然頁面多的話可以用第三方的,比如crosswalk,騰訊x5都不錯。
順便說一嘴,h5與原生互動,一般兩種方式:
1、通過js調java,背景傳相應資料到手機端處理即可。
2、還有一種就是通過重寫webViewClient類,重寫其shouldOverrideUrlLoading方法,進行攔截即可。
廢話不多說,言歸正傳,開始你的表演,h5上傳檔案,需要适配不同的手機版本
直接上代碼
private WebChromeClient mWebChromeClient = new WebChromeClient() {
// For Android 3.0+
public void openFileChooser(ValueCallback<Uri> uploadMsg) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
WebViewActivity.this.startActivityForResult(Intent.createChooser(i, "File Chooser"), FILECHOOSER_RESULTCODE);
}
// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
WebViewActivity.this.startActivityForResult(
Intent.createChooser(i, "File Browser"),
FILECHOOSER_RESULTCODE);
}
//For Android 4.1
public void openFileChooser(ValueCallback<Uri> uploadMsg, String acceptType, String capture) {
// Log.d(TAG, "openFileChoose(ValueCallback<Uri> uploadMsg, String acceptType, String capture)");
mUploadMessage = uploadMsg;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
WebViewActivity.this.startActivityForResult(Intent.createChooser(i, "File Browser"), WebViewActivity.FILECHOOSER_RESULTCODE);
}
// For Android 5.0+
@Override
public boolean onShowFileChooser(WebView webView, ValueCallback<Uri[]> filePathCallback, WebChromeClient.FileChooserParams fileChooserParams) {
mUploadCallbackAboveL = filePathCallback;
Intent i = new Intent(Intent.ACTION_GET_CONTENT);
i.addCategory(Intent.CATEGORY_OPENABLE);
i.setType("*/*");
WebViewActivity.this.startActivityForResult(
Intent.createChooser(i, "File Browser"),
FILECHOOSER_RESULTCODE);
return true;
}
};
當然還需要在onActivityResult進行處理直接貼上:
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == FILECHOOSER_RESULTCODE) {
if (null == mUploadMessage && null == mUploadCallbackAboveL) {
return;
}
Uri result = data == null || resultCode != RESULT_OK ? null : data.getData();
if (mUploadCallbackAboveL != null) {
onActivityResultAboveL(requestCode, resultCode, data);
} else if (mUploadMessage != null) {
mUploadMessage.onReceiveValue(result);
mUploadMessage = null;
}
}
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void onActivityResultAboveL(int requestCode, int resultCode, Intent data) {
if (requestCode != FILECHOOSER_RESULTCODE
|| mUploadCallbackAboveL == null) {
return;
}
Uri[] results = null;
if (resultCode == Activity.RESULT_OK) {
if (data == null) {
} else {
String dataString = data.getDataString();
ClipData clipData = data.getClipData();
if (clipData != null) {
results = new Uri[clipData.getItemCount()];
for (int i = 0; i < clipData.getItemCount(); i++) {
ClipData.Item item = clipData.getItemAt(i);
results[i] = item.getUri();
}
}
if (dataString != null) {
results = new Uri[]{Uri.parse(dataString)};
}
}
}
mUploadCallbackAboveL.onReceiveValue(results);
mUploadCallbackAboveL = null;
return;
}
最後切記,打包的後如果不能正常運作,那就要看你的混淆代碼了,如下:
#---------------------------------webview------------------------------------
-keepclassmembers class fqcn.of.javascript.interface.for.Webview {
public *;
}
-keepclassmembers class * extends android.webkit.WebViewClient {
public void *(android.webkit.WebView, java.lang.String, android.graphics.Bitmap);
public boolean *(android.webkit.WebView, java.lang.String);
}
-keepclassmembers class * extends android.webkit.WebViewClient {
public void *(android.webkit.WebView, jav.lang.String);
}
-keepclassmembers class * extends android.webkit.WebChromeClient{
public void openFileChooser(...);
}