Android基础(三)通信领域3.触摸拨号

xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="fill_parent"
    android:layout_width="fill_parent"
    android:orientation="vertical">
    <ImageButton
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/myImageButton"/>
</LinearLayout>

java:

import android.content.Intent;
import android.database.Cursor;
import android.provider.ContactsContract;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AutoCompleteTextView;
import android.widget.ImageButton;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
   private ImageButton myImageButton;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myImageButton=(ImageButton)findViewById(R.id.myImageButton);
        myImageButton.setOnClickListener(new ImageButton.OnClickListener()
        {
            @Override
            public void onClick(View v)
            {
                Intent myInentDial=new Intent("android.intent.action.CALL_BUTTON");
                startActivity(myInentDial);
            }
        });
    }
}

1.Intent myInentDial=new Intent(“android.intent.action.CALL_BUTTON”); 显式Intent