【contentprovider系列4】删除联系人信息

来源：互联网发布：网络用语开车什么意思编辑：程序博客网时间：2024/06/17 03:14

说明

根据输入的联系人姓名，来删除该联系人的所有的信息。

效果

这里写图片描述

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/name"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:hint="请输入要删除的联系人名字"            />    <Button            android:id="@+id/delete"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="删除"            /></LinearLayout>

activity书写

package com.example.myapp;import android.app.Activity;import android.content.ContentResolver;import android.database.Cursor;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 {    private EditText name;    /**     * Called when the activity is first created.     */    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        name = (EditText) findViewById(R.id.name);        Button delete = (Button) findViewById(R.id.delete);        delete.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                String nameStr = name.getText().toString();                //先查询到name对应的rawcontactsid                ContentResolver cr = getContentResolver();                int re = cr.delete(ContactsContract.RawContacts.CONTENT_URI,                         "display_name = ?",                        new String[]{nameStr}                );                if (re > 0) {                    Toast.makeText(MyActivity.this, "删除成功", Toast.LENGTH_SHORT).show();                }            }        });    }}

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