dispatchTouchEvent vs onInterceptTouchEvent vs onTouchEvent

1. xml

<com.torv.lijian.touchclickdemo.MyRelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl_root"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />

    <com.torv.lijian.touchclickdemo.MyRelativeLayout2
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <com.torv.lijian.touchclickdemo.MyButton
            android:id="@+id/btn_touch"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:text="Touch" />
    </com.torv.lijian.touchclickdemo.MyRelativeLayout2>

</com.torv.lijian.touchclickdemo.MyRelativeLayout>

2. root layout:

public class MyRelativeLayout extends RelativeLayout {

    private static final String TAG = "MyRelativeLayout";

    public MyRelativeLayout(Context context) {
        super(context);
        Log.d(TAG, TAG);
    }

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

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.d(TAG, "dispatchTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.d(TAG, "dispatchTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.d(TAG, "dispatchTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.d(TAG, "dispatchTouchEvent ACTION_CANCEL");
                break;


        }
        return super.dispatchTouchEvent(ev);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.d(TAG, "onInterceptTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.d(TAG, "onInterceptTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.d(TAG, "onInterceptTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.d(TAG, "onInterceptTouchEvent ACTION_CANCEL");
                break;

        }
        return super.onInterceptTouchEvent(ev);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.d(TAG, "onTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.d(TAG, "onTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.d(TAG, "onTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.d(TAG, "onTouchEvent ACTION_CANCEL");
                break;


        }
        return super.onTouchEvent(ev);
    }
}

3. parent layout:

public class MyRelativeLayout2 extends RelativeLayout {

    private static final String TAG = "MyRelativeLayout2";

    public MyRelativeLayout2(Context context) {
        super(context);
        Log.e(TAG, TAG);
    }

    public MyRelativeLayout2(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.e(TAG, "dispatchTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.e(TAG, "dispatchTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.e(TAG, "dispatchTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.e(TAG, "dispatchTouchEvent ACTION_CANCEL");
                break;


        }
        return super.dispatchTouchEvent(ev);
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.e(TAG, "onInterceptTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.e(TAG, "onInterceptTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.e(TAG, "onInterceptTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.e(TAG, "onInterceptTouchEvent ACTION_CANCEL");
                break;

        }
        return super.onInterceptTouchEvent(ev);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {
        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.e(TAG, "onTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.e(TAG, "onTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.e(TAG, "onTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.e(TAG, "onTouchEvent ACTION_CANCEL");
                break;


        }
        return super.onTouchEvent(ev);
    }
}

4. childe layout:

public class MyButton extends Button {

    private static final String TAG = "MyButton";

    public MyButton(Context context) {
        super(context);
        Log.w(TAG, TAG);
    }

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

    @Override
    public boolean dispatchTouchEvent(MotionEvent ev) {

        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.w(TAG, "dispatchTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.w(TAG, "dispatchTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.w(TAG, "dispatchTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.w(TAG, "dispatchTouchEvent ACTION_CANCEL");
                break;

        }
        return super.dispatchTouchEvent(ev);
    }

    @Override
    public boolean onTouchEvent(MotionEvent ev) {

        switch (ev.getActionMasked()) {

            case MotionEvent.ACTION_DOWN:
                Log.w(TAG, "onTouchEvent ACTION_DOWN");
                break;

            case MotionEvent.ACTION_MOVE:
                Log.w(TAG, "onTouchEvent ACTION_MOVE");
                break;

            case MotionEvent.ACTION_UP:
                Log.w(TAG, "onTouchEvent ACTION_UP");
                break;

            case MotionEvent.ACTION_CANCEL:
                Log.w(TAG, "onTouchEvent ACTION_CANCEL");
                break;
        }
        return super.onTouchEvent(ev);
    }
}

dispatchTouchEvent vs onInterceptTouchEvent vs onTouchEvent

原文：http://blog.csdn.net/torvalbill/article/details/46458119