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activity_main.xml- <?xml version="1.0" encoding="utf-8"?>
- <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:app="http://schemas.android.com/apk/res-auto"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- tools:context="com.example.xinwei.runtimepermissiontest.MainActivity">
- <Button
- android:id="@+id/make_call"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:text="make call"/>
- </android.support.constraint.ConstraintLayout>
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AndroidManifest.xml- <uses-permission android:name="android.permission.CALL_PHONE" />
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MainActivity.java- package com.example.xinwei.runtimepermissiontest;
- import android.Manifest;
- import android.content.Intent;
- import android.content.pm.PackageManager;
- import android.net.Uri;
- import android.support.annotation.NonNull;
- import android.support.v4.app.ActivityCompat;
- import android.support.v4.content.ContextCompat;
- import android.support.v7.app.AppCompatActivity;
- import android.os.Bundle;
- import android.view.View;
- import android.widget.Button;
- import android.widget.Toast;
- public class MainActivity extends AppCompatActivity {
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- Button makeCall = (Button)findViewById(R.id.make_call);
- makeCall.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View view) {
- if(ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.CALL_PHONE)!=PackageManager.PERMISSION_GRANTED){
- ActivityCompat.requestPermissions(MainActivity.this,new String[]{Manifest.permission.CALL_PHONE},1);
- }else{
- call();
- }
- }
- });
- }
- private void call(){
- try{
- Intent intent = new Intent(Intent.ACTION_CALL);
- intent.setData(Uri.parse("tel:10086"));
- startActivity(intent);
- }catch(SecurityException e){
- e.printStackTrace();
- }
- }
- @Override
- public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
- super.onRequestPermissionsResult(requestCode, permissions, grantResults);
- switch(requestCode){
- case 1:
- if(grantResults.length>0&&grantResults[0]== PackageManager.PERMISSION_GRANTED){
- call();
- }else{
- Toast.makeText(this, "You denied the permission", Toast.LENGTH_SHORT).show();
- }
- break;
- default:
- }
- }
- }
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