【contentprovider系列5】修改联系人信息

说明

将提供的联系人姓名修改为期待修改成的联系人姓名。

效果

布局

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

    <EditText
            android:id="@+id/name1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="请输入修改前的名字"
            />

    <EditText
            android:id="@+id/name2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:hint="请输入希望修改成的名字"
            />

    <Button
            android:id="@+id/update"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="修改"
            />
</LinearLayout>

activity书写

package com.ht.demo03;

import android.app.Activity;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class MyActivity extends Activity {
    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final EditText name1 = (EditText) findViewById(R.id.name1);
        final EditText name2 = (EditText) findViewById(R.id.name2);
        Button update = (Button) findViewById(R.id.update);

        update.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String name1Str = name1.getText().toString();
                String name2Str = name2.getText().toString();
                ContentResolver cr = getContentResolver();
                ContentValues contentValues = new ContentValues();
                contentValues.put("display_name", name2Str);
                int re = cr.update(
                        ContactsContract.RawContacts.CONTENT_URI,
                        contentValues,
                        "display_name = ?",
                        new String[]{name1Str}
                );
                if (re > 0) {
                    Toast.makeText(MyActivity.this, "修改成功", Toast.LENGTH_SHORT).show();
                }
            }
        });

    }
}