android键盘弹起监听,android 监听键盘是否弹起，并根据键盘的弹起控制键盘显示关闭...

package com.example.administrator.keyboardapplication;

import android.content.Context;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.view.inputmethod.InputMethodManager;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity implements View.OnLayoutChangeListener {

private View activityRootView;

private int screenHeight = 0;

private int keyHeight = 0;

private Button myButton;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

activityRootView = findViewById(R.id.root_layout);

screenHeight = this.getWindowManager().getDefaultDisplay().getHeight();

myButton = findViewById(R.id.button);

myButton.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);

imm.hideSoftInputFromWindow(myButton.getWindowToken(),0);

}

});

keyHeight = screenHeight/3;

activityRootView.addOnLayoutChangeListener(this);

}

@Override

public void onLayoutChange(View v, int left, int top, int right, int bottom,

int oldLeft, int oldTop, int oldRight, int oldBottom) {

Log.i("iven","left:"+left+"\nright:"+right+"\ntop:"+top+"\nbottom:"+bottom);

Log.i("iven","oldleft:"+oldLeft+"\nOldright:"+oldRight+"\ntop:"+oldTop+"\nbottom:"+oldBottom);

//现在认为只要控件将Activity向上推的高度超过了1/3屏幕高，就认为软键盘弹起

if(oldBottom != 0 && bottom != 0 &&(oldBottom - bottom > keyHeight)){

Toast.makeText(MainActivity.this, "监听到软键盘弹起...", Toast.LENGTH_SHORT).show();

}else if(oldBottom != 0 && bottom != 0 &&(bottom - oldBottom > keyHeight)){

Toast.makeText(MainActivity.this, "监听到软件盘关闭...", Toast.LENGTH_SHORT).show();

}

}

}