Android中怎么实现横竖屏幕切换生命周期，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
一、简介
二、代码
/activityLifeCycle_3Screen/AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.fry.activityLifeCycle_3Screen" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:configChanges="keyboardHidden|orientation|screenSize" android:name="com.fry.activityLifeCycle_3Screen.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity01" ></activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity02" android:theme="@android:style/Theme.Translucent" ></activity> </application> </manifest> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.fry.activityLifeCycle_3Screen" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:configChanges="keyboardHidden|orientation|screenSize" android:name="com.fry.activityLifeCycle_3Screen.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity01" ></activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity02" android:theme="@android:style/Theme.Translucent" ></activity> </application> </manifest>
核心代码：android:configChanges="keyboardHidden|orientation|screenSize"
com.fry.activityLifeCycle_3Screen.MainActivity
package com.fry.activityLifeCycle_3Screen;
import com.fry.activityLifeCycle_3Screen.R;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener{
private Button btn_pause;//创建一个button对象
private Button btn_stop;
private Button btn_offLine;
private String tag=MainActivity.class.getSimpleName();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);//父类操作
setContentView(R.layout.activity_main);//引入名为activity_main的界面
btn_pause=(Button) findViewById(R.id.btn_pause);//找id为btn_pause的button
btn_stop=(Button) findViewById(R.id.btn_stop);//找id为btn_stop的button
btn_offLine=(Button) findViewById(R.id.btn_offLine);
btn_pause.setOnClickListener(this);
btn_stop.setOnClickListener(this);
btn_offLine.setOnClickListener(this);
/*
* activity被创建时执行
*/
Log.d(tag, "onCreate");
}
/*
* activity可见时执行
*/
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
Log.d(tag, "onStart");
}
/*
* activity交互时执行
*/
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Log.d(tag, "onResume");
}
/*
* activity重新可见时执行
*/
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
Log.d(tag, "onRestart");
}
/*
* activity暂停时执行
*/
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
Log.d(tag, "onPause");
}
/*
* activity停止时执行
*/
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
Log.d(tag, "onStop");
}
/*
* activity销毁时执行
*/
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
Log.d(tag, "onDestroy");
}
/*
* activity在配置改变时执行
* 比如横竖屏幕的切换，键盘有无的切换，屏幕大小的改变
*/
@Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
Log.d(tag, "onConfigurationChanged");
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btn_pause:
Intent intent=new Intent();
intent.setClass(this, Activity02.class);
startActivity(intent);
break;
case R.id.btn_stop:
Intent intent2=new Intent();
intent2.setClass(this, Activity01.class);
startActivity(intent2);
break;
case R.id.btn_offLine://断开状态
finish();
default:
break;
}
}
}三、一直横屏或者一直竖屏
很多手机游戏里面一进去就是横屏，而且不能切换为竖屏，那么怎么样达到这样的效果呢？
/activityLifeCycle_3Screen/AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.fry.activityLifeCycle_3Screen" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:screenOrientation="portrait" android:name="com.fry.activityLifeCycle_3Screen.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity01" ></activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity02" android:theme="@android:style/Theme.Translucent" ></activity> </application> </manifest>
android:screenOrientation="landscape"横屏
android:screenOrientation="portrait"竖屏
四、如何获取手机是横屏还是竖屏
com.fry.activityLifeCycle_3Screen.MainActivity
package com.fry.activityLifeCycle_3Screen;
import com.fry.activityLifeCycle_3Screen.R;
import android.app.Activity;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class MainActivity extends Activity implements OnClickListener{
private Button btn_pause;//创建一个button对象
private Button btn_stop;
private Button btn_offLine;
private String tag=MainActivity.class.getSimpleName();
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);//父类操作
setContentView(R.layout.activity_main);//引入名为activity_main的界面
btn_pause=(Button) findViewById(R.id.btn_pause);//找id为btn_pause的button
btn_stop=(Button) findViewById(R.id.btn_stop);//找id为btn_stop的button
btn_offLine=(Button) findViewById(R.id.btn_offLine);
btn_pause.setOnClickListener(this);
btn_stop.setOnClickListener(this);
btn_offLine.setOnClickListener(this);
/*
* activity被创建时执行
*/
Log.d(tag, "onCreate");
}
/*
* activity可见时执行
*/
@Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
Log.d(tag, "onStart");
}
/*
* activity交互时执行
*/
@Override
protected void onResume() {
// TODO Auto-generated method stub
super.onResume();
Log.d(tag, "onResume");
}
/*
* activity重新可见时执行
*/
@Override
protected void onRestart() {
// TODO Auto-generated method stub
super.onRestart();
Log.d(tag, "onRestart");
}
/*
* activity暂停时执行
*/
@Override
protected void onPause() {
// TODO Auto-generated method stub
super.onPause();
Log.d(tag, "onPause");
}
/*
* activity停止时执行
*/
@Override
protected void onStop() {
// TODO Auto-generated method stub
super.onStop();
Log.d(tag, "onStop");
}
/*
* activity销毁时执行
*/
@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
Log.d(tag, "onDestroy");
}
/*
* activity在配置改变时执行
* 比如横竖屏幕的切换，键盘有无的切换，屏幕大小的改变
*/
@Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
Log.d(tag, "onConfigurationChanged");
int width=getWindowManager().getDefaultDisplay().getWidth();
int height=getWindowManager().getDefaultDisplay().getHeight();
if(width>height) Log.d(tag, "landscape");
else Log.d(tag, "portrait");
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btn_pause:
Intent intent=new Intent();
intent.setClass(this, Activity02.class);
startActivity(intent);
break;
case R.id.btn_stop:
Intent intent2=new Intent();
intent2.setClass(this, Activity01.class);
startActivity(intent2);
break;
case R.id.btn_offLine://断开状态
finish();
default:
break;
}
}
}/activityLifeCycle_3Screen/AndroidManifest.xml
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.fry.activityLifeCycle_3Screen" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="19" /> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" > <activity android:configChanges="keyboardHidden|orientation|screenSize" android:name="com.fry.activityLifeCycle_3Screen.MainActivity" android:label="@string/app_name" > <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity01" ></activity> <activity android:name="com.fry.activityLifeCycle_3Screen.Activity02" android:theme="@android:style/Theme.Translucent" ></activity> </application> </manifest>
关于Android中怎么实现横竖屏幕切换生命周期问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注亿速云行业资讯频道了解更多相关知识。
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