Android add item to global context menu

Currently Android does not support this, you cannot override or hook functionality globally at the system level without the particular activity implementing an intent or activity that you expose. Even in the case of publishing an intent it wouldn't matter unless the application running is a consumer... and all the base system applications and obviously all applications prior to yours would not be without updating the app to consume.

Basically as it stands, this is not possible.

What exactly are you trying to accomplish with this global context menu, some sort of global "Search For" or "Send To" functionality that runs through your application?

Add intent-filter in your file android-manifest.xml:

<activity
   android:name=".ProcessTextActivity"
   android:label="@string/process_text_action_name">
  <intent-filter>
     <action android:name="android.intent.action.PROCESS_TEXT" />
     <category android:name="android.intent.category.DEFAULT" />
     <data android:mimeType="text/plain" />
 </intent-filter>
</activity>

Get highlighted by user text in activity your app in method onCreate():

  @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.process_text_main);
    CharSequence text = getIntent()
      .getCharSequenceExtra(Intent.EXTRA_PROCESS_TEXT);
    // process the text
}

More information in the article on medium.

Thanks for user: YungBlade

Him answer on ru.stackoverflow.com