Android studio权限使用相关相关

Android Studio高SDK版本的权限获取和eclipse有一些不一样,下面的例子使用了2个权限，操作方法如下

Manifist.xml中申请权限

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.ldw.test">
    <uses-permission android:name="android.permission.SEND_SMS"/>
    <uses-permission android:name="android.permission.CALL_PHONE"/>
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

在MainActivty.java中加入权限限制

package com.ldw.test;

import androidx.appcompat.app.AppCompatActivity;
import androidx.core.app.ActivityCompat;

import android.Manifest;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import java.util.ArrayList;

public class MainActivity extends Activity implements View.OnClickListener {

    private Button btn_send;
    private Button btn_dail;
    private EditText et_number;
    private EditText et_content;
    private Button btn_toast1, btn_toast2;
    private static final int PERMISSION_REQUEST_CODE = 1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);


        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.M) {

            if (checkSelfPermission(Manifest.permission.SEND_SMS)
                    == PackageManager.PERMISSION_DENIED) {

                Log.d("permission", "permission denied to SEND_SMS - requesting it");
                String[] permissions = {Manifest.permission.SEND_SMS};

                requestPermissions(permissions, PERMISSION_REQUEST_CODE);

            }
            if (checkSelfPermission(Manifest.permission.CALL_PHONE)
                    == PackageManager.PERMISSION_DENIED) {

                Log.d("permission", "permission denied to CALL_PHONE - requesting it");
                String[] permissions = {Manifest.permission.CALL_PHONE};

                requestPermissions(permissions, PERMISSION_REQUEST_CODE);

            }
        }
        btn_send = (Button) findViewById(R.id.btn_send);
        //第一种点击事件的方法
        btn_send.setOnClickListener(new MyListener());

        //第三种点击事件的方法
        show3();
    }

    //第一种点击事件的方法
    class MyListener implements View.OnClickListener{

        @Override
        public void onClick(View v){
            et_content = (EditText) findViewById(R.id.et_content);
            et_number = (EditText) findViewById(R.id.et_number);
            String content = et_content.getText().toString();
            String number = et_number.getText().toString();
            System.out.println("===="+number);
            System.out.println("===="+content);
            SmsManager sm = SmsManager.getDefault();
            ArrayList<String> smss = sm.divideMessage(content);
            for (String string:smss){
                sm.sendTextMessage(number, null, string, null, null);
            }
        }
    }

    //第二种点击事件，直接在布局文件中添加android:onClick="dail"
    public void dail(View v){
        System.out.println("==============");
        et_number = (EditText) findViewById(R.id.et_number);
        String number = et_number.getText().toString();
        Intent intent = new Intent();
        intent.setAction(intent.ACTION_CALL);
        intent.setData(Uri.parse("tel:" + number));
        startActivity(intent);
    }

    //第三种点击事件的方法
    public void show3(){
        btn_toast1 = (Button) findViewById(R.id.btn_toast1);
        btn_toast2 = (Button) findViewById(R.id.btn_toast2);
        btn_toast1.setOnClickListener(this);
        btn_toast2.setOnClickListener(this);
    }

    //第三种点击的方法
    @Override
    public void onClick(View v){
        switch (v.getId()){
            case R.id.btn_toast1:
                Toast.makeText(this, "弹窗1", Toast.LENGTH_SHORT).show();
                break;
            case R.id.btn_toast2:
                Toast.makeText(this, "弹窗2", Toast.LENGTH_SHORT).show();
                break;
        }
    }

}

 

来源：CSDN

作者：augfun

链接：https://blog.csdn.net/augfun/article/details/103479553