Android 获取View高度的几种方法_果然是酱的博客_android获取view高度

package com.zkl.test;

import android.os.Build;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.ViewTreeObserver;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private TextView mTextView;

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

    private void initView() {
        mTextView = (TextView) findViewById(R.id.mTextView);
    }

    private void initEvent() {
        int height = mTextView.getHeight();
        Log.d("Debug","oncreat获取高度："+height);//获取的高度为0 ，所以不能直接去获取高度
        mTextView.post(new Runnable() {
            @Override
            public void run() {
                int height = mTextView.getHeight();
                Log.d("Debug","post中获取高度："+height);
            }
        });

        mTextView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
            @Override
            public void onGlobalLayout() {
                if (Build.VERSION.SDK_INT>=16){
                    mTextView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
                }else{
                    mTextView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
                }
                int height = mTextView.getHeight();
                Log.d("Debug","addOnGlobalLayoutListener中获取高度："+height);
            }
        });

        mTextView.getViewTreeObserver().addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                int height = mTextView.getHeight();
                mTextView.getViewTreeObserver().removeOnPreDrawListener(this);
                Log.d("Debug","addOnPreDrawListener中获取高度："+height);
                return false;
            }
        });

        mTextView.addOnLayoutChangeListener(new View.OnLayoutChangeListener() {
            @Override
            public void onLayoutChange(View v, int left, int top, int right, int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) {
                mTextView.removeOnLayoutChangeListener(this);
                int height = mTextView.getHeight();
                Log.d("Debug","addOnLayoutChangeListener中获取高度："+height);
            }
        });
    }
}
package com.zkl.test;

import android.os.Build;