Android组件的通讯——Intent

<intent-filter . . . >
<action android:name="com.example.project.SHOW_CURRENT" />
<action android:name="com.example.project.SHOW_RECENT" />
<action android:name="com.example.project.SHOW_PENDING" />
. . .
</intent-filter>

<intent-filter . . . >
<category android:name="android.intent.category.DEFAULT" />
<category android:name="android.intent.category.BROWSABLE" />
. . .
</intent-filter>

<intent-filter . . . >
<data android:mimeType="video/mpeg" android:scheme="http" . . . />
<data android:mimeType="audio/mpeg" android:scheme="http" . . . />
. . .
</intent-filter>

<data android:mimeType="image/*" />

<data android:scheme="http" android:type="video/*" />

<intent-filter . . . >
<action android:name="code android.intent.action.MAIN" />
<category android:name="code android.intent.category.LAUNCHER" />
</intent-filter>

显示网页
Uri uri = Uri.parse("http://www.google.com.hk/");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent); 显示地图
Uri uri = Uri.parse("geo:38.899533,-77.036476");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
//其他geo URI范例（latitude: 纬度,longitude: 经度）
//geo:latitude,longitude
//geo:latitude,longitude?z=zoom
//geo:0,0?q=my+street+address
//geo:0,0?q=business+near+city
//google.streetview:cbll=lat,lng&cbp=1,yaw,,pitch,zoom&mz=mapZoom 路径规划
Uri uri = Uri.parse("http://maps.google.com/maps?f=d&saddr=startLat%20startLng&daddr=endLat%20endLng&hl=en");
Intent intent = new Intent(Intent.ACTION_VIEW, uri);
startActivity(intent);
//where startLat, startLng, endLat, endLng are a long with 6 decimals like: 50.123456打电话
//叫出拨号程序
Uri uri = Uri.parse("tel:0800000123");
Intent intent = new Intent(Intent.ACTION_DIAL, uri);
startActivity(intent);//直接打电话出去
Uri uri = Uri.parse("tel:0800000123");
Intent intent = new Intent(Intent.ACTION_CALL, uri);
startActivity(intent);
//用這個，要在 AndroidManifest.xml 中，加上<uses-permission id="android.permission.CALL_PHONE" />传送SMS/MMS
//调用短信程序
Intent it = new Intent(Intent.ACTION_VIEW, uri);
it.putExtra("sms_body", "The SMS text");
it.setType("vnd.android-dir/mms-sms");
startActivity(it); //传送消息
Uri uri = Uri.parse("smsto://0800000123");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
it.putExtra("sms_body", "The SMS text");
startActivity(it); //传送 MMS
Uri uri = Uri.parse("content://media/external/images/media/23");
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra("sms_body", "some text");
it.putExtra(Intent.EXTRA_STREAM, uri);
it.setType("image/png");
startActivity(it);传送 Email
Uri uri = Uri.parse("mailto:xxx@abc.com");
Intent it = new Intent(Intent.ACTION_SENDTO, uri);
startActivity(it);Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_EMAIL, "me@abc.com");
it.putExtra(Intent.EXTRA_TEXT, "The email body text");
it.setType("text/plain");
startActivity(Intent.createChooser(it, "Choose Email Client"));Intent it=new Intent(Intent.ACTION_SEND);
String[] tos={"me@abc.com"};
String[] ccs={"you@abc.com"};
it.putExtra(Intent.EXTRA_EMAIL, tos);
it.putExtra(Intent.EXTRA_CC, ccs);
it.putExtra(Intent.EXTRA_TEXT, "The email body text");
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.setType("message/rfc822");
startActivity(Intent.createChooser(it, "Choose Email Client")); //传送附件
Intent it = new Intent(Intent.ACTION_SEND);
it.putExtra(Intent.EXTRA_SUBJECT, "The email subject text");
it.putExtra(Intent.EXTRA_STREAM, "file:///sdcard/mysong.mp3");
sendIntent.setType("audio/mp3");
startActivity(Intent.createChooser(it, "Choose Email Client")); 播放多媒体
Uri uri = Uri.parse("file:///sdcard/song.mp3");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
it.setType("audio/mp3");
startActivity(it); Uri uri = Uri.withAppendedPath(MediaStore.Audio.Media.INTERNAL_CONTENT_URI, "1");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it); Market 相关
//寻找某个应用
Uri uri = Uri.parse("market://search?q=pname:pkg_name");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where pkg_name is the full package path for an application //显示某个应用的相关信息
Uri uri = Uri.parse("market://details?id=app_id");
Intent it = new Intent(Intent.ACTION_VIEW, uri);
startActivity(it);
//where app_id is the application ID, find the ID
//by clicking on your application on Market home
//page, and notice the ID from the address bar Uninstall 应用程序
Uri uri = Uri.fromParts("package", strPackageName, null);
Intent it = new Intent(Intent.ACTION_DELETE, uri);
startActivity(it);

<?xml version="1.0" encoding="utf-8"?>
<resources> <string name="app_name">MyNestedLayoutDemo</string>
<string name="hello_world">Hello world!</string>
<string name="title_activity_send">发送Intent的Activity程序。</string>
<string name="title_activity_receive">接收Intent的Activity程序。</string></resources>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.mynestedlayoutdemo.Send" > <Button
android:id="@+id/mybut"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="按我将跳转到另一个Activity程序" />
<TextView
android:id="@+id/msg"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/></LinearLayout>

package com.example.mynestedlayoutdemo;import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
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;public class Send extends ActionBarActivity {
private Button mybut = null;
private TextView msg = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_send);
this.setTitle("Intent操作");
this.mybut = (Button) super.findViewById(R.id.mybut);
this.mybut.setOnClickListener(new OnClickListenerImpl());
this.msg = (TextView) super.findViewById(R.id.msg);
} public class OnClickListenerImpl implements OnClickListener { @Override
public void onClick(View arg0) {
Intent it = new Intent(Send.this, Receive.class); //实例化Intent
it.putExtra("myinfo", "计算机科学与技术学院");
// Send.this.startActivity(it);
Send.this.startActivityForResult(it, 1); //启动Activity
} }
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.send, 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.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
} @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(resultCode){
case RESULT_OK:
msg.setText("返回的内容是："+data.getStringExtra("retmsg"));
break;
case RESULT_CANCELED:
msg.setText("操作取消。");
break;
default:
break;
}
}
}

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.mynestedlayoutdemo.Receive" > <TextView
android:id="@+id/myinfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:id="@+id/retbut"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="返回数据到Send。"/></LinearLayout>

package com.example.mynestedlayoutdemo;import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.os.Bundle;
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;public class Receive extends ActionBarActivity {
private TextView myinfo = null;
private Button retbtn = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_receive);
this.myinfo = (TextView) super.findViewById(R.id.myinfo);
Intent it = super.getIntent(); //取得启动此程序的Intent
String info = it.getStringExtra("myinfo"); //取得设置的附加信息
myinfo.setText(info); //设置文本显示信息
this.retbtn = (Button) super.findViewById(R.id.retbut);
this.retbtn.setOnClickListener(new OnClickListenerImpl());
} public class OnClickListenerImpl implements OnClickListener { @Override
public void onClick(View arg0) {
Receive.this.getIntent().putExtra("retmsg", "研究生"); //返回信息
//设置返回数据的状态，RESULT_OK与Send.java中的onActivityResult()的判断对应
Receive.this.setResult(RESULT_OK, Receive.this.getIntent());
Receive.this.finish(); //结束Intent
} }
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.receive, 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.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}

Uri uri = Uri.parse("http//www.mldn.cn");

<?xml version="1.0" encoding="utf-8"?>
<resources> <string name="app_name">Intent应用</string>
<string name="title_activity_my_intent_case_demo">MyIntentCaseDemo</string></resources>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.mynestedlayoutdemo.MyIntentCaseDemo" > <Button
android:id="@+id/mybut"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="打开网页" /></LinearLayout>

package com.example.mynestedlayoutdemo;import android.support.v7.app.ActionBarActivity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;public class MyIntentCaseDemo extends ActionBarActivity {
private Button mybut = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_intent_case_demo);
this.mybut = (Button) super.findViewById(R.id.mybut);
this.mybut.setOnClickListener(new OnClickListenerImpl());
} public class OnClickListenerImpl implements OnClickListener { @Override
public void onClick(View arg0) {
Uri uri = Uri.parse("http://www.mldn.cn"); //指定数据
Intent it = new Intent();
it.setAction(Intent.ACTION_VIEW);
it.setData(uri);
MyIntentCaseDemo.this.startActivity(it); //启动Activity } }
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.my_intent_case_demo, 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.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}