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E/AndroidRuntime:     at android.view.ViewGroup.resetResolvedLayoutDirection(ViewGroup.java:7291)
    at android.view.ViewGroup.resetResolvedLayoutDirection(ViewGroup.java:7291)

final LinearLayout wordCube = new LinearLayout(this);
wordCube.addView(wordCube, chTvParams);

final LinearLayout wordCube = new LinearLayout(this);
wordCube.addView(tv, chTvParams); // 要加的是tv

String[] list = context.getAssets().list("folder"); // 执行这一句要两千多毫秒

public static  void installApk(Context context,String downloadApk) {
    Intent intent = new Intent(Intent.ACTION_VIEW);
    File file = new File(downloadApk);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        Uri apkUri = FileProvider.getUriForFile(context, "com.iNTGO.nndc.fileprovider", file);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION|
                        Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
        intent.setDataAndType(apkUri, "application/vnd.android.package-archive");
    } else {
        Uri uri = Uri.fromFile(file);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setDataAndType(uri, "application/vnd.android.package-archive");
    }
    context.startActivity(intent);
}

        final int flyInTime = 100;
        final int stayTime = 520;
        final int flyOutTime = 250;
        final int totalTime = flyInTime + stayTime + flyOutTime;
        binding.starIv.setX(inX);
        binding.starIv.setY(yStay);
        binding.starIv.setVisibility(View.VISIBLE);
        setStarIvSize(0, 0);
        final ValueAnimator animator = ValueAnimator.ofInt(1, totalTime);
        animator.setDuration(totalTime);
        animator.setInterpolator(new AccelerateInterpolator());
        animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
            @Override
            public void onAnimationUpdate(ValueAnimator valueAnimator) {
                int value = (int) valueAnimator.getAnimatedValue();
                ImageView starIv = binding.starIv;
                if (value < flyInTime) {
                    float inProgress = value / (1.0f * flyInTime);
                    float x = inProgress * (xStay - inX) + inX;
                    float y;
                    if (value < flyInTime / 2) {
                        y = yStay + 20 - inProgress * 60;
                    } else {
                        y = yStay - 20 + inProgress * 60;
                    }
                    starIv.setX(x);
                    starIv.setY(y);
                    setStarIvSize((int) (mStarIvOriginWid * (inProgress)), (int) (mStarIvOriginHeight * (inProgress)));
//                    Log.d(TAG, "onAnimationUpdate: value: " + value + ", progress: " + inProgress + ", x: " + x);
                } else if (value < flyInTime + stayTime) {
                    starIv.setX(xStay);
                    starIv.setY(yStay);
                    setStarIvSize(mStarIvOriginWid, mStarIvOriginHeight);
                } else {
                    if (valueAnimator.isRunning()) {
                        float progress = (value - flyInTime - stayTime) / (1.0f * flyOutTime);
                        starIv.setX(xStay + (progress * Math.abs(endX - xStay)));
                        starIv.setY(yStay - (progress * Math.abs(endY - yStay)));
                        setStarIvSize((int) (mStarIvOriginWid * (1 - progress)), (int) (mStarIvOriginHeight * (1 - progress)));
                    }
                }
                if (value >= totalTime - 10) {
                    binding.starIv.setVisibility(View.GONE);
                }
            }
        });
        animator.start();

    // 改变星星ImageView的大小，LayoutParams不能弄错了
    private void setStarIvSize(int wid, int height) {
        RelativeLayout.LayoutParams lp = (RelativeLayout.LayoutParams) binding.starIv.getLayoutParams();
        lp.width = wid;
        lp.height = height;
        binding.starIv.setLayoutParams(lp);
    }

imageView.post(new Runnable() {
    @Override
    public void run() {
        int[] location = new int[2];
        imageView.getLocationOnScreen(location);
    }
});

private boolean mExitApp = false;

    @Override
    public void onBackPressed() {
        super.onBackPressed();
        mExitApp = true;
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        if (mExitApp) {
            System.exit(0);
        }
    }

android.content.res.XmlBlock$Parser.finalize() timed out after 10 seconds

android.content.res.AssetManager.xmlBlockGone(AssetManager.java:500)

android.content.res.AssetManager.xmlBlockGone(AssetManager.java:500)
android.content.res.XmlBlock.decOpenCountLocked(XmlBlock.java:63)
android.content.res.XmlBlock.access$1600(XmlBlock.java:34)
android.content.res.XmlBlock$Parser.close(XmlBlock.java:448)
android.content.res.XmlBlock$Parser.finalize(XmlBlock.java:454)
java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:191)
java.lang.Daemons$FinalizerDaemon.run(Daemons.java:174)
java.lang.Thread.run(Thread.java:818)

@Override
public MyViewModel initViewModel() {
    MyAppViewModelFactory factory = MyAppViewModelFactory.getInstance(getApplication());
    return ViewModelProviders.of(this, factory).get(MyViewModel.class);
}

while (needCheckList.size() < 3) {
    Random rd = new Random();
    String word = wordList.get(rd.nextInt(wordList.size()));
    if(!needCheckList.contains(word)) {
        needCheckList.add(word);
    }
    // .....
}

productFlavors {
    xxx {
        manifestPlaceholders = [XX_ID  : "123",
                                XX_KEY : "key_key"]
    }
}

gradlew assembleXxxRelease

gradlew assembleXxxRelease && gradlew assembleYyyRelease && gradlew assembleZzzRelease

public BindingCommand myCommand = new BindingCommand(new BindingAction() {
    @Override
    public void call() {
        // my logic
    }
});

<LinearLayout
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:layout_weight="55"
    android:orientation="horizontal">

    <com.rustfisher.view.MarqueeTextView
        android:id="@+id/tv_name"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:ellipsize="marquee"
        android:focusable="true"
        android:focusableInTouchMode="true"
        android:maxWidth="150dp"
        android:singleLine="true"
        android:text=""
        android:textSize="10sp" />

</LinearLayout>

registerForContextMenu(mEt);
mEt.setOnCreateContextMenuListener(new View.OnCreateContextMenuListener() {
    @Override
    public void onCreateContextMenu(final ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
        Log.d(TAG, "onCreateContextMenu: selected: " + mEt.getSelectionStart() + ", " + mEt.getSelectionEnd()); // 都是0
        getMenuInflater().inflate(R.menu.et_menu, menu);
    }
});

mEt.setCustomSelectionActionModeCallback(genActionModeCallback1());

private ActionMode.Callback genActionModeCallback1() {
    return new ActionMode.Callback() {
        @Override
        public boolean onCreateActionMode(ActionMode mode, Menu menu) {
            Log.d(TAG, "onCreateActionMode:"
                    + " selected: " + mEt.getSelectionStart() + ", " + mEt.getSelectionEnd());
            return true;
        }

        @Override
        public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
            Log.d(TAG, "onPrepareActionMode: " + " selected: " + mEt.getSelectionStart() + ", " + mEt.getSelectionEnd());
            menu.clear();
            mode.getMenuInflater().inflate(R.menu.et_menu, menu);
            return true;
        }

        @Override
        public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
            Log.d(TAG, "onActionItemClicked: " + " selected: " + mEt.getSelectionStart() + ", " + mEt.getSelectionEnd());
            mode.finish();
            return false;
        }

        @Override
        public void onDestroyActionMode(ActionMode mode) {
            Log.d(TAG, "onDestroyActionMode: " + " selected: " + mEt.getSelectionStart() + ", " + mEt.getSelectionEnd());
        }
    };
}

private void getStatusBarHeight() {
    Rect rectangle = new Rect();
    Window window = getWindow();
    window.getDecorView().getWindowVisibleDisplayFrame(rectangle);
    Log.d(TAG, "getStatusBarHeight: " + rectangle.top);
}

<style name="AppTheme" parent="Theme.AppCompat.DayNight.NoActionBar">
    <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowTranslucentNavigation">false</item>
    <item name="android:statusBarColor">@android:color/transparent</item>
</style>

android:networkSecurityConfig="@xml/network_security_config"
android:resizeableActivity="false"

<application
    android:name=".app.MyApplication"
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:networkSecurityConfig="@xml/network_security_config"
    android:theme="@style/AppTheme">

F:\IE\MyApp0826\app\libs>adb root
F:\IE\MyApp0826\app\libs>adb remount
remount succeeded

F:\IE\MyApp0826\app\libs>adb shell mkdir /system/priv-app/MyApp
F:\IE\MyApp0826\app\libs>adb shell chmod 755 /system/priv-app/MyApp
F:\IE\MyApp0826\app\libs>adb shell chmod 644 /system/priv-app/MyApp/MyApp.apk
F:\IE\MyApp0826\app\libs>adb shell chmod 755 /system/priv-app/MyApp/lib
F:\IE\MyApp0826\app\libs>adb shell chmod 755 /system/priv-app/MyApp/lib/arm
F:\IE\MyApp0826\app\libs>adb shell sync
F:\IE\MyApp0826\app\libs>adb shell reboot

Random rand = new Random(seed);
int random_integer = rand.nextInt(upperbound-lowerbound) + lowerbound;

aHandler = new Handler() {
    @Override
    public void handleMessage(@NonNull Message msg) {
        handleResult(msg);
    }
};