Android自定义view生命周期

Android2020年6月7日 pm12:26发布4年前 (2020)更新 3xcn.com@站长

自定义布局或者自定义view都是一样的流程

周期如下

    
    #  进入
    onFinishInflate:
    
    onAttachedToWindow:
    
    onWindowVisibilityChanged:
    
    onVisibilityChanged:
    
    onMeasure:
    
    onLayout:
    
    onDraw:

    # 退出

    onWindowVisibilityChanged:
    
    onVisibilityChanged:
    
    onDetachedFromWindow:

package com.la.allwater.view;

import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Canvas;
import android.util.AttributeSet;
import android.util.Log;
import android.view.View;
import android.widget.LinearLayout;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;

public class MyLinearLayout extends LinearLayout {

    private String TAG = "MyLinearLayout";

    public MyLinearLayout(Context context) {
        this(context, null);
    }

    public MyLinearLayout(Context context, @Nullable AttributeSet attrs) {
        this(context, attrs, 0);
    }

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

    @Override
    protected void onFinishInflate() {
        super.onFinishInflate();
        Log.d(TAG, "onFinishInflate: ");
    }

    @Override
    protected void onAttachedToWindow() {
        super.onAttachedToWindow();
        Log.d(TAG, "onAttachedToWindow: ");
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
        Log.d(TAG, "onMeasure: ");
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
        super.onLayout(changed, l, t, r, b);
        Log.d(TAG, "onLayout: ");
    }

    @Override
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        Log.d(TAG, "onDraw: ");
    }

    @Override
    protected void onWindowVisibilityChanged(int visibility) {
        super.onWindowVisibilityChanged(visibility);
        Log.d(TAG, "onWindowVisibilityChanged: ");
    }

    @Override
    protected void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        Log.d(TAG, "onConfigurationChanged: ");
    }

    @Override
    protected void onVisibilityChanged(@NonNull View changedView, int visibility) {
        super.onVisibilityChanged(changedView, visibility);
        Log.d(TAG, "onVisibilityChanged: ");
    }

    @Override
    protected void onDetachedFromWindow() {
        super.onDetachedFromWindow();
        Log.d(TAG, "onDetachedFromWindow: ");
    }
}