Android系統調用

main.xml如下:

[html]
LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:orientation="vertical" 
    android:gravity="center_horizontal" 
    > 
   <Button 
       android:id="@+id/callTelephoneButton" 
       android:layout_width="150dip" 
       android:layout_height="40dip" 
       android:gravity="center" 
       android:text="@string/callTelephone" 
       android:layout_marginTop="50dip" 
       android:textSize="20sp" 
       /> 
    <Button 
       android:id="@+id/browsephotosButton" 
       android:layout_width="150dip" 
       android:layout_height="40dip" 
       android:gravity="center" 
       android:text="@string/browsephotos" 
       android:layout_marginTop="50dip" 
       android:textSize="20sp" 
       /> 
     <Button 
       android:id="@+id/openBrowserButton" 
       android:layout_width="150dip" 
       android:layout_height="40dip" 
       android:gravity="center" 
       android:text="@string/openBrowser" 
       android:layout_marginTop="50dip" 
       android:textSize="20sp" 
       /> 
      <Button 
       android:id="@+id/openCameraButton" 
       android:layout_width="150dip" 
       android:layout_height="40dip" 
       android:gravity="center" 
       android:text="@string/openCamera" 
       android:layout_marginTop="50dip" 
       android:textSize="20sp" 
       /> 
    
</LinearLayout> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical"
    android:gravity="center_horizontal"
    >
   <Button
       android:id="@+id/callTelephoneButton"
       android:layout_width="150dip"
       android:layout_height="40dip"
       android:gravity="center"
       android:text="@string/callTelephone"
       android:layout_marginTop="50dip"
       android:textSize="20sp"
       />
    <Button
       android:id="@+id/browsephotosButton"
       android:layout_width="150dip"
       android:layout_height="40dip"
       android:gravity="center"
       android:text="@string/browsephotos"
       android:layout_marginTop="50dip"
       android:textSize="20sp"
       />
     <Button
       android:id="@+id/openBrowserButton"
       android:layout_width="150dip"
       android:layout_height="40dip"
       android:gravity="center"
       android:text="@string/openBrowser"
       android:layout_marginTop="50dip"
       android:textSize="20sp"
       />
      <Button
       android:id="@+id/openCameraButton"
       android:layout_width="150dip"
       android:layout_height="40dip"
       android:gravity="center"
       android:text="@string/openCamera"
       android:layout_marginTop="50dip"
       android:textSize="20sp"
       />
  
</LinearLayout>MainActivity如下:

[java]
package cn.com.bravesoft.testintent; 
import android.net.Uri; 
import android.os.Bundle; 
import android.provider.MediaStore; 
import android.view.View; 
import android.view.View.OnClickListener; 
import android.widget.Button; 
import android.app.Activity; 
import android.content.Intent; 
/**
 * 
 *官方資料:
 *1 權限設置
 *  http://developer.android.com/reference/android/Manifest.permission.html
 *2 系統Intent
 *  http://developer.android.com/reference/android/content/Intent.html#ACTION_CALL
 */ 
public class MainActivity extends Activity { 
    private Button mTelephoneButton; 
    private Button mPhotosButton; 
    private Button mBrowserButton; 
    private Button mCameraButton; 
    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
        super.onCreate(savedInstanceState); 
        setContentView(R.layout.main); 
        init(); 
    } 
    private void init(){ 
        mTelephoneButton=(Button) findViewById(R.id.callTelephoneButton); 
        mTelephoneButton.setOnClickListener(new ButtonOnClickListenerImpl()); 
        mPhotosButton=(Button) findViewById(R.id.browsephotosButton); 
        mPhotosButton.setOnClickListener(new ButtonOnClickListenerImpl()); 
        mBrowserButton=(Button) findViewById(R.id.openBrowserButton); 
        mBrowserButton.setOnClickListener(new ButtonOnClickListenerImpl()); 
        mCameraButton=(Button) findViewById(R.id.openCameraButton); 
        mCameraButton.setOnClickListener(new ButtonOnClickListenerImpl()); 
    } 
    private class ButtonOnClickListenerImpl implements OnClickListener{ 
        @Override 
        public void onClick(View v) { 
            switch (v.getId()) { 
            case R.id.callTelephoneButton: 
                //撥打電話  
                Intent telephoneIntent=new Intent(); 
                telephoneIntent.setAction("android.intent.action.CALL"); 
                telephoneIntent.setData(Uri.parse("tel:"+"150028068")); 
                startActivity(telephoneIntent); 
                break; 
            case R.id.browsephotosButton: 
                //查看圖片  
                Intent galleryIntent=new Intent(); 
                galleryIntent.setAction(Intent.ACTION_GET_CONTENT); 
                galleryIntent.setType("image/*"); 
                startActivity(galleryIntent); 
                break; 
            case R.id.openBrowserButton: 
                 //打開浏覽器  
                 Intent browserIntent=new Intent(); 
                 browserIntent.setAction(Intent.ACTION_VIEW); 
                 browserIntent.setData(Uri.parse("http://www.ifeng.com")); 
                 startActivity(browserIntent); 
                break; 
            case R.id.openCameraButton: 
                //打開照相機  
                Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);   
                startActivity(cameraIntent); 
                break; 
 
            default: 
                break; 
            } 
        } 
         
    } 
}