項目中為了實作賬号多裝置登入的監聽 一個賬号在别的裝置登入時在該裝置上需要彈出對話框提示 故而用到全局對話框
實作方式
[ 1 ]. 添權重限
[ 2 ]. 設定dialog類型
一定要在show之前設定
如果類型為TYPE_SYSTEM_ALERT需要開啟懸浮窗權限 使用相當不友善
是以使用TYPE_TOAST 一般裝置不需要特意去開啟權限即可使用
//設定彈出全局對話框
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_TOAST);
//dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);
dialog.show();
[ 3 ]. 完整代碼
public static void showDialog(final Context context, final String title, final Boolean isCancelable, final String ok, final String close, final DialogCallback callback) {
AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(isCancelable);
View view = View.inflate(context, R.layout.item_dialog_exit, null);
TextView tv_itemdialog_title = (TextView) view.findViewById(R.id.tv_itemdialog_title);
TextView tv_itemdialog_ok = (TextView) view.findViewById(R.id.tv_itemdialog_ok);
TextView tv_itemdialog_close = (TextView) view.findViewById(R.id.tv_itemdialog_close);
tv_itemdialog_ok.setText(ok);
tv_itemdialog_close.setText(close);
builder.setView(view);
final AlertDialog dialog = builder.create();
//設定彈出全局對話框
dialog.getWindow().setType(WindowManager.LayoutParams.TYPE_TOAST);
dialog.show();
tv_itemdialog_title.setText(title);
tv_itemdialog_ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
callback.onPositive(dialog);
}
});
tv_itemdialog_close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
callback.onNegative(dialog);
}
});
使用WindowManager實作全局對話框
public static void showPopupWindow(final Context context, final DialogCallback callback) {
// 擷取WindowManager
final WindowManager mWindowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
final WindowManager.LayoutParams params = new WindowManager.LayoutParams();
// 類型
params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
// 設定flag
params.flags = WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;
// 如果設定了WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE，彈出的View收不到Back鍵的事件
// 不設定這個彈出框的透明遮罩顯示為黑色
params.format = PixelFormat.TRANSLUCENT;
// FLAG_NOT_TOUCH_MODAL不阻塞事件傳遞到後面的視窗
// 設定 FLAG_NOT_FOCUSABLE 懸浮視窗較小時，後面的應用圖示由不可長按變為可長按
// 不設定這個flag的話，home頁的劃屏會有問題
params.width = WindowManager.LayoutParams.WRAP_CONTENT;
params.height = WindowManager.LayoutParams.WRAP_CONTENT;
params.gravity = Gravity.CENTER;
TextView textView = new TextView(context);
textView.setText("sfgsfdsfbsadfbasdfg");
textView.setTextSize(100);
final View mView = LayoutInflater.from(context).inflate(R.layout.item_dialog_exit, null);
TextView tv_itemdialog_title = (TextView) mView.findViewById(R.id.tv_itemdialog_title);
TextView tv_itemdialog_ok = (TextView) mView.findViewById(R.id.tv_itemdialog_ok);
TextView tv_itemdialog_close = (TextView) mView.findViewById(R.id.tv_itemdialog_close);
tv_itemdialog_ok.setText("重新登入");
tv_itemdialog_close.setText("登出");
tv_itemdialog_title.setText("該賬戶在其他裝置登入,若不是您在操作,請及時修改密碼以防洩露資訊");
tv_itemdialog_ok.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 隐藏彈窗
mWindowManager.removeView(mView);
callback.onPositive();
}
});
tv_itemdialog_close.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mWindowManager.removeView(mView);
callback.onNegative();
}
});
mWindowManager.addView(textView, params);
}