事件分发

dispatchTouchEvent-向下分发操作

onInterceptTouchEvent-拦截操作（1.Activity和TextView没有，Layout有；2.true-拦截、false-不拦截）

onTouchEvent-处理操作（true-处理、false-不处理）

1.textview点击事件

<org.mobiletrain.touchevent.MyLinearLayout
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_centerInParent="true"
        android:background="#ff0303"
        android:gravity="center">

        <org.mobiletrain.touchevent.MyTextView
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:background="#18ff03"/>
    </org.mobiletrain.touchevent.MyLinearLayout>

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        Log.d("lenve", "MainActivity - dispatchTouchEvent: ");
        return super.dispatchTouchEvent(ev);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        Log.d("lenve", "MainActivity - onTouchEvent: ");
        return super.onTouchEvent(event);
    }
}

public class MyLinearLayout extends LinearLayout {
    public MyLinearLayout(Context context) {
        super(context);
    }

    public MyLinearLayout(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyLinearLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    //事件分发
    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        Log.d("lenve", "MyLinearLayout - dispatchTouchEvent: ");
        return super.dispatchTouchEvent(ev);
    }

    //事件拦截
    //1.返回值为false表示不拦截事件，事件继续向下分发给它的子控件
    //2.返回值为true表示拦截事件，拦截之后自己处理
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        boolean b = super.onInterceptTouchEvent(ev);
        Log.d("lenve", "MyLinearLayout - onInterceptTouchEvent: " + b);
        return b;
    }

    //事件处理
    //1.false表示该事件未处理，向上分发给它的父容器或者Activity
    //2.true表示该事件已处理，事件到此结束
    @Override
    public boolean onTouchEvent(MotionEvent event) {
        boolean b = super.onTouchEvent(event);
        Log.d("lenve", "MyLinearLayout - onTouchEvent: " + b);
        return b;
    }
}

public class MyTextView extends TextView {
    public MyTextView(Context context) {
        super(context);
    }

    public MyTextView(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public MyTextView(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        Log.d("lenve", "MyTextView - dispatchTouchEvent: ");
        return super.dispatchTouchEvent(event);
    }

    @Override
    public boolean onTouchEvent(MotionEvent event) {
        Log.d("lenve", "MyTextView - onTouchEvent: ");
        return super.onTouchEvent(event);
    }
}

结果：

//按下
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/lenve: MainActivity - dispatchTouchEvent: 
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/lenve: MyLinearLayout - dispatchTouchEvent: 
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/lenve: MyLinearLayout - onInterceptTouchEvent: 
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/levne: MyTestView - dispatchTouchEvent: 
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/lenve: MyTestView - onTouchEvent: 
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/lenve: MyLinearLayout - onTouchEvent: 
04-25 12:44:10.339 27977-27977/com.example.administrator.touchevent D/lenve: MainActivity - onTouchEvent: 
//松开
04-25 12:44:11.103 27977-27977/com.example.administrator.touchevent D/lenve: MainActivity - dispatchTouchEvent: 
04-25 12:44:11.103 27977-27977/com.example.administrator.touchevent D/lenve: MainActivity - onTouchEvent: 

2.listview点击事件

public class MainActivity extends AppCompatActivity {

    private List<String> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView listView = (ListView) findViewById(R.id.lv);
        initData();
        final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, list);
        listView.setAdapter(adapter);
        listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Toast.makeText(MainActivity.this, list.get(position), Toast.LENGTH_SHORT).show();
            }
        });
        listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id) {
                list.remove(position);
                adapter.notifyDataSetChanged();
                return true;
            }
        });
    }

    private void initData() {
        list = new ArrayList<>();
        for (int i = 0; i < 30; i++) {
            list.add("李四：" + i);
        }
    }
}

注：按下后，setOnItemLongClickListener先执行，松开后，执行onItemClick。设置setOnItemLongClickListener返回true，松开后就不会执行onItemClick

3.viewpager滑动

viewPager.setOnTouchListener(new View.OnTouchListener() {
    @Override
    public boolean onTouch(View v, MotionEvent event) {
        //让ViewPager的父容器不要拦截滑动事件
        viewPager.getParent().requestDisallowInterceptTouchEvent(true);
        //这里如果返回true则ViewPager的滑动事件会被屏蔽
        return false;
    }
});

结果：

第一页的广告滑到最右边再滑不会切换到第二页