Android: android Intent and IntentFilter, intentfilter

Android: android Intent and IntentFilter, intentfilter

Article from: http://blog.csdn.net/intbird

1. intentfilter description:

If you want to open another application of an activity, or call our own activity in webView or bybird app,
You can use intentfilter to filter the activities we need;

* Uri parameter description Java Code:

final Uri uri =  Uri.parse("intbird://com.intbird.soft/testing/tested?name='Test'");        TextView textView = (TextView)findViewById(R.id.textView);        textView.setText(uri.getScheme() + "\n" //intbird                        + uri.getPort() + "\n"  //-1                        + uri.getAuthority() + "\n" //com.intbird.soft                        + uri.getHost() + "\n"  //com.intbird.soft                        + uri.getPath() + "\n" // /testing/tested                        + uri.getPathSegments() + "\n" // [tesing,tested]                        + uri.getQuery()+"\n"); // name='Text'

Public void onClick (View v) {Intent intent = new Intent (); intent. setAction ("android. intent. action. VIEW "); intent. setData (uri); PackageManager packageManager = getPackageManager (); List <ResolveInfo> activities = packageManager. queryIntentActivities (intent, 0); boolean isIntentSafe = activities. size ()> 0; if (isIntentSafe) {startActivity (intent);} else {Toast. makeText (MainActivity. this, "Match None", Toast. LENGTH_SHORT ). show ();}}

XML Code:

NOTE: The category label must exist.

<activity            android:name=".MyIntentFilter"            android:label="@string/app_name" >            <intent-filter>                <category android:name="android.intent.category.DEFAULT"></category>                <action android:name="android.intent.action.VIEW"/>                <data android:scheme="intbird" android:host="com.intbird.soft"/>            </intent-filter>        </activity>

2. Better understanding of webpage calls

Uri:
Final Uri urihttp = Uri. parse ("https://www.baidu.com/s? Wd = intbird ");
// Schma: http
// Host: www.baidu.com
// Path:/s
// Query: wd = intbird

XML

<activity            android:name=".MyIntentFilter2"            android:label="@string/app_name" >            <intent-filter>                <category android:name="android.intent.category.DEFAULT"/>                <action android:name="android.intent.action.VIEW"/>                <data android:scheme="https"  android:host="www.baidu.com" />            </intent-filter>        </activity>

Match scheme and multiple hosts. Intent Chooser is displayed.

3. Similarly, if we have multiple activities;

If both are the same:

<activity            android:name=".MyIntentFilter"            android:label="@string/app_name" >            <intent-filter>                <category android:name="android.intent.category.DEFAULT"></category>                <action android:name="android.intent.action.SENDTO"/>                <data android:scheme="intbird" android:host="com.intbird.soft"/>            </intent-filter>        </activity>        <activity            android:name=".MyIntentFilter2"            android:label="@string/app_name" >            <intent-filter>                <category android:name="android.intent.category.DEFAULT"/>                <action android:name="android.intent.action.SENDTO"/>                <data android:scheme="intbird"  android:host="com.intbird.soft" />            </intent-filter>        </activity>

So:

But: add path [android: path = "/testing"] to one, startActivity directly