Android手机或平板都会存在横竖屏切换的功能,通常是由物理重力感应触发的,但是
有时候也不尽然,通常在设置里面我们可以对手机的横竖屏切换进行关闭。
AndroidManifest.
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:theme="@android:style/Theme.Translucent" />
<?
activity_main.
<RelativeLayout ="http://schemas.android.com/apk/res/android" ="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" > <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="获取Configuration信息" android:textSize="25sp" android:layout_marginTop="80dip" android:layout_centerHorizontal="true" /> <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="测试ConfigurationChange" android:textSize="25sp" android:layout_centerInParent="true" android:id="@+id/mytext" /></RelativeLayout>
MainActivity.java
package com.example.yanlei.yl7;import android.content.res.Configuration;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends AppCompatActivity { private Button mButton; private TextView pTextView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); pTextView=(TextView)this.findViewById(R.id.mytext); System.out.println("---> onCreate()"); init(); } private void init() { mButton = (Button) findViewById(R.id.button); mButton.setOnClickListener(new ClickListenerImpl()); } private class ClickListenerImpl implements OnClickListener { @Override public void onClick(View v) { getConfigurationInfo(); } } private void getConfigurationInfo() { Configuration configuration = getResources().getConfiguration(); //获取屏幕方向 int l = configuration.ORIENTATION_LANDSCAPE; int p = configuration.ORIENTATION_PORTRAIT; if (configuration.orientation == l) { pTextView.setText("现在是横屏===="); System.out.println("现在是横屏"); } if (configuration.orientation == p) { pTextView.setText("现在是竖屏==="); System.out.println("现在是竖屏"); } } @Override public void onConfigurationChanged(Configuration newConfig) { super.onConfigurationChanged(newConfig); //newConfig.orientation获得当前屏幕状态是横向或者竖向 //Configuration.ORIENTATION_PORTRAIT 表示竖向 //Configuration.ORIENTATION_LANDSCAPE 表示横屏 if(newConfig.orientation==Configuration.ORIENTATION_PORTRAIT){ pTextView.setText("现在是竖屏"); Toast.makeText(MainActivity.this, "现在是竖屏", Toast.LENGTH_SHORT).show(); } if(newConfig.orientation==Configuration.ORIENTATION_LANDSCAPE){ pTextView.setText("现在是横屏"); Toast.makeText(MainActivity.this, "现在是横屏", Toast.LENGTH_SHORT).show(); } } @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); outState.putString("name", "zxx"); outState.putInt("id", 9527); System.out.println("---> onSaveInstanceState()"); } @Override protected void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); String name = savedInstanceState.getString("name"); int id = savedInstanceState.getInt("id"); System.out.println("---> onRestoreInstanceState()"); System.out.println("名字=" + name + ",编号=" + id); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest. int id = item.getItemId(); if (id == R.id.action_settings) { return true; } return super.onOptionsItemSelected(item); }}
原标题:Android横竖屏切换小结
关键词:Android