android 拨打电话小功能
1.其实就是对Intent 的ACTION进行参数设置。
在manifest中药设置打电话的权限:
1 <uses-permission android:name="android.permission.CALL_PHONE" />
xml:
1 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 2 xmlns:tools="http://schemas.android.com/tools" 3 android:layout_width="match_parent" 4 android:layout_height="match_parent" 5 android:orientation="vertical" 6 tools:context=".MainActivity" > 7 8 <EditText 9 android:id="@+id/phoneNumber" 10 android:layout_width="match_parent" 11 android:layout_height="wrap_content" 12 android:inputType="phone" /> 13 14 <Button 15 android:id="@+id/btn_call" 16 android:layout_width="match_parent" 17 android:layout_height="wrap_content" 18 android:text="打电话" /> 19 20 </LinearLayout>
Activity:
1 public class MainActivity extends Activity { 2 3 private EditText Number; 4 5 private Button btn; 6 7 @Override 8 protected void onCreate(Bundle savedInstanceState) { 9 super.onCreate(savedInstanceState); 10 setContentView(R.layout.activity_main); 11 Number = (EditText) findViewById(R.id.phoneNumber); 12 btn = (Button) findViewById(R.id.btn_call); 13 btn.setOnClickListener(new OnClickListener() { 14 15 @Override 16 public void onClick(View v) { 17 if (Number.getText().toString().trim().equals("")) { 18 Number.setError("电话号码不能为空"); 19 } else { 20 21 Intent i = new Intent("android.intent.action.CALL", Uri 22 .parse("tel:" + Number.getText().toString().trim())); 23 startActivity(i); 24 } 25 26 } 27 }); 28 29 } 30 }