動態(tài)更改屏幕方向……LANDSCAPE與PORTRAIT package irdc.ex05_22; import android.app.Activity; import android.content.pm.ActivityInfo; import android.os.Bundle; import android.view.Display; import android.view.View; import android.widget.Button; import android.widget.TextView; import android.widget.Toast; public class EX05_22 extends Activity { private TextView mTextView01; private Button mButton01; @Override public void onCreate(Bundle savedInstanceState) { ??super.onCreate(savedInstanceState); ??setContentView(R.layout.main); ?? ??mButton01 = (Button)findViewById(R.id.myButton1);? ??mTextView01 = (TextView)findViewById(R.id.myTextView1); ?? ??if(getRequestedOrientation()==-1) ??{ ????mTextView01.setText(getResources().getText ????(R.string.str_err_1001)); ??} ?? ?? ??mButton01.setOnClickListener(new Button.OnClickListener() ??{ ????@Override ????public void onClick(View arg0) ????{ ?????? ?????? ?????? ??????if(getRequestedOrientation()==-1) ??????{ ???????? ????????mTextView01.setText(getResources().getText ????????(R.string.str_err_1001)); ??????} ??????else ??????{ ????????if(getRequestedOrientation()== ???????????ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE) ????????{ ?????????? ??????????setRequestedOrientation ??????????(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); ????????} ????????else if(getRequestedOrientation()== ????????????????ActivityInfo.SCREEN_ORIENTATION_PORTRAIT) ????????{ ?????????? ??????????setRequestedOrientation ??????????(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE); ????????} ??????} ????} ????? ??}); } @Override public void setRequestedOrientation(int requestedOrientation) { ??// TODO Auto-generated method stub ?? ?? ??switch(requestedOrientation) ??{ ???? ????case (ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE): ??????mMakeTextToast ??????( ????????getResources().getText(R.string.str_msg1).toString(), ????????false ??????); ??????break; ???? ????case (ActivityInfo.SCREEN_ORIENTATION_PORTRAIT): ??????mMakeTextToast ??????( ????????getResources().getText(R.string.str_msg2).toString(), ????????false ??????); ??????break; ??} ??super.setRequestedOrientation(requestedOrientation); } @Override public int getRequestedOrientation() { ??// TODO Auto-generated method stub ?? ?? ??return super.getRequestedOrientation(); } public void mMakeTextToast(String str, boolean isLong) { ??if(isLong==true) ??{ ????Toast.makeText(EX05_22.this, str, Toast.LENGTH_LONG).show(); ??} ??else ??{ ????Toast.makeText(EX05_22.this, str, Toast.LENGTH_SHORT).show(); ??} } } AndroidMinifest.xml <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="irdc.ex05_22" android:versionCode="1" android:versionName="1.0.0"> <application ??android:icon="@drawable/icon" ??android:label="@string/app_name"> ??<activity ????android:name=".EX05_22" ????android:label="@string/app_name" ????android:screenOrientation="portrait"> ????<intent-filter> ??????<action android:name="android.intent.action.MAIN" /> ??????<category android:name="android.intent.category.LAUNCHER" /> ????</intent-filter> ??</activity> </application> </manifest>

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