Android调用系统程序

package mobile.android.ch09.invokeotherapp; import android.app.Activity; import android.content.Intent; 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.widget.EditText; public class Main extends Activity implements OnClickListener { @Override public void onClick(View view) { switch (view.getId()) { case R.id.btnCall: Intent callIntent = new Intent(Intent.ACTION_CALL, Uri .parse("tel:12345678")); startActivity(callIntent); break; case R.id.btnTouchDialer: Intent touchDialerIntent = new Intent("com.android.phone.action.TOUCH_DIALER"); startActivity(touchDialerIntent); break; case R.id.btnDial: Intent dialIntent = new Intent(Intent.ACTION_DIAL, Uri .parse("tel:87654321")); startActivity(dialIntent); break; case R.id.btnWeb: Intent webIntent = new Intent(Intent.ACTION_VIEW, Uri .parse("http://nokiaguy.blogjava.net")); startActivity(webIntent); break; case R.id.btnSendToEmail: Uri uri = Uri.parse("mailto:xxx@abc.com"); Intent intent = new Intent(Intent.ACTION_SENDTO, uri); startActivity(intent); break; case R.id.btnSendEmail: Intent sendEmailIntent = new Intent(Intent.ACTION_SEND); sendEmailIntent.putExtra(Intent.EXTRA_EMAIL, new String[] { "techcast@126.com" }); sendEmailIntent.putExtra(Intent.EXTRA_CC, new String[] { "abc@126.com", "test@126.com" }); sendEmailIntent.putExtra(Intent.EXTRA_SUBJECT, "关于Android的两个技术问题"); sendEmailIntent.putExtra(Intent.EXTRA_TEXT, "1. 如何调用其他应用程序中的Activity?\n2. 在应用程序中如果接收系统广播？"); sendEmailIntent.setType("text/plain"); startActivity(Intent.createChooser(sendEmailIntent, "选择发送消息的客户端")); break; case R.id.btnContactList: Intent contactListIntent = new Intent("com.android.contacts.action.LIST_CONTACTS"); startActivity(contactListIntent); break; case R.id.btnSettings: Intent settingsIntent = new Intent("android.settings.SETTINGS"); startActivity(settingsIntent); break; case R.id.btnWifiSettings: Intent wifiSettingsIntent = new Intent("android.settings.WIFI_SETTINGS"); startActivity(wifiSettingsIntent); break; case R.id.btnAudio: Intent audioIntent = new Intent(Intent.ACTION_GET_CONTENT); audioIntent.setType("audio/*"); startActivity(Intent.createChooser(audioIntent, "选择音频程序")); break; } } @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); Button btnCall = (Button) findViewById(R.id.btnCall); Button btnTouchDialer = (Button)findViewById(R.id.btnTouchDialer); Button btnDial = (Button) findViewById(R.id.btnDial); Button btnWeb = (Button) findViewById(R.id.btnWeb); Button btnAudio = (Button) findViewById(R.id.btnAudio); Button btnSendToEmail = (Button) findViewById(R.id.btnSendToEmail); Button btnSendEmail = (Button) findViewById(R.id.btnSendEmail); Button btnContactList = (Button)findViewById(R.id.btnContactList); Button btnSettings = (Button)findViewById(R.id.btnSettings); Button btnWifiSettings = (Button)findViewById(R.id.btnWifiSettings); btnCall.setOnClickListener(this); btnTouchDialer.setOnClickListener(this); btnDial.setOnClickListener(this); btnWeb.setOnClickListener(this); btnAudio.setOnClickListener(this); btnSendToEmail.setOnClickListener(this); btnSendEmail.setOnClickListener(this); btnContactList.setOnClickListener(this); btnSettings.setOnClickListener(this); btnWifiSettings.setOnClickListener(this); } }