Android 中運行時許可權擷取連絡人資訊 Demo

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代碼比較簡單...

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="club.seliote.readcontact">     <uses-permission android:name="android.permission.READ_CONTACTS"/>     <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>

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="club.seliote.readcontact.MainActivity">     <TextView        android:id="@+id/text_view"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Unknow Data"        android:scrollbars="vertical"        app:layout_constraintBottom_toBottomOf="parent"        app:layout_constraintLeft_toLeftOf="parent"        app:layout_constraintRight_toRightOf="parent"        app:layout_constraintTop_toTopOf="parent" /> </android.support.constraint.ConstraintLayout>

MainActivity.java

package club.seliote.readcontact; import android.Manifest;import android.content.ContentResolver;import android.content.pm.PackageManager;import android.database.Cursor;import android.provider.ContactsContract;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.text.method.ScrollingMovementMethod;import android.widget.TextView;import android.widget.Toast; import java.util.HashMap;import java.util.Map; public class MainActivity extends AppCompatActivity {     @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        this.setContentView(R.layout.activity_main);         Map<String, String> contacts = null;         if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_CONTACTS) != PackageManager.PERMISSION_GRANTED) {            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_CONTACTS}, 0);        } else {            contacts = readContact();        }         String displayString = "UserName : PhoneNumber\n\n";         if (contacts != null && !contacts.isEmpty()) {            for (Map.Entry<String, String> entry : contacts.entrySet()) {                displayString += entry.getKey() + " : " + entry.getValue() + "\n";            }        }         TextView textView = (TextView) this.findViewById(R.id.text_view);        textView.setMovementMethod(ScrollingMovementMethod.getInstance());        textView.setText(displayString);    }     private Map<String, String> readContact() {        Map<String, String> contacts = new HashMap<>();        try (Cursor cursor = MainActivity.this.getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, null, null, null)) {            cursor.moveToFirst();            while (!cursor.isAfterLast()) {                String userName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));                String phoneNum = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));                contacts.put(userName, phoneNum);                cursor.moveToNext();            }        } catch (SecurityException exp) {            exp.printStackTrace();        }        return contacts;    }     @Override    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {        super.onRequestPermissionsResult(requestCode, permissions, grantResults);        switch (requestCode) {            case 0 :                if (permissions[0] == Manifest.permission.READ_CONTACTS && grantResults[0] == PackageManager.PERMISSION_GRANTED) {                    readContact();                } else {                    Toast.makeText(MainActivity.this, "Permisson deny!", Toast.LENGTH_LONG).show();                }                break;            default:                break;        }    }}

Android 中運行時許可權擷取連絡人資訊 Demo