【Android】关于 startActivityForResult 的一个小应用

Content

界面图
第一个Activity (SearchContact)
第二个Activity (PickContact)
第三个Activity (AnotherPick) 和第二个一样
其他

从一个 Activity 中打开另一个 Activity，并返回获得结果

界面图

第一个Activity 第二个返回结果

第一个Activity (SearchContact)

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:padding="30dp"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_marginEnd="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_name" />

        <EditText
            android:id="@+id/ma_et_input"
            android:hint="@string/et_input"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:importantForAutofill="no"
            android:inputType="text" />

    </LinearLayout>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/bt_search"
        android:onClick="search"/>

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">

        <TextView
            android:layout_marginEnd="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_phoneNumber"/>

        <TextView
            android:id="@+id/ma_tv_phoneNumber"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_empty"/>

    </LinearLayout>

</LinearLayout>

MainActivity.java

package com.example.searchcontact;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    public static final String EXTRA_MESSAGE = "com.example.searchContact.MESSAGE";
    private static final int PICK_CONTACT_REQUEST = 123;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

//        Intent intent = getIntent();
//        String phoneNumber = intent.getStringExtra(PickContact.PICK_MESSAGE);
    }

    public void search(View view) {
        Intent intent = new Intent("searchPhoneNumber");
//        intent.setAction("searchPhoneNumber");

        EditText editText = (EditText)findViewById(R.id.ma_et_input);
        String name = editText.getText().toString();
        intent.putExtra(EXTRA_MESSAGE, name);

        if(intent.resolveActivity(getPackageManager()) != null) {
            startActivityForResult(intent, PICK_CONTACT_REQUEST);
        }
    }

    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(resultCode == RESULT_OK && requestCode == PICK_CONTACT_REQUEST) {
//            Cursor cursor = getContentResolver().query(data.getData(),
//                    new String[] {ContactsContract.Contacts.DISPLAY_NAME}, null, null, null);
//            if(cursor.moveToFirst()) {
//                int columnIndex = cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME);
//                String name = cursor.getString(columnIndex);
//              }
            TextView textView = (TextView)findViewById(R.id.ma_tv_phoneNumber);
            textView.setText(data.getDataString());
        }
    }
}

第二个Activity (PickContact)

activity_pick_contact.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".PickContact"
    android:padding="30dp"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_marginEnd="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_searchingName"/>

        <TextView
            android:id="@+id/pc_tv_empty"
            android:text="@string/tv_empty"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>

    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_marginEnd="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_inputPhoneNumber" />

        <EditText
            android:id="@+id/pc_et_inputPhoneNumber"
            android:hint="@string/et_input"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:importantForAutofill="no"
            android:inputType="phone" />

    </LinearLayout>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/bt_return"
        android:onClick="returnTOMain"/>

</LinearLayout>

PickContact.java

package com.example.searchcontact;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

import org.w3c.dom.Text;

public class PickContact extends AppCompatActivity {

//    public static final String PICK_MESSAGE = "com.example.pickContact.MESSAGE";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pick_contact);

        Intent intent = getIntent();
        String name = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
        TextView textView = (TextView)findViewById(R.id.pc_tv_empty);
        textView.setText(name);
    }

    public void returnTOMain(View view) {
//        Intent intent = new Intent(this, MainActivity.class);
        EditText editText = (EditText)findViewById(R.id.pc_et_inputPhoneNumber);
        String phoneNumber = editText.getText().toString();
//        intent.putExtra(PICK_MESSAGE, phoneNumber);
//        startActivity(intent);

        Intent result = new Intent("com.example.RESULT_ACTION", Uri.parse(phoneNumber));
//        result.putExtra(PICK_MESSAGE, phoneNumber);
        setResult(Activity.RESULT_OK, result);
        finish();
    }
}

第三个Activity (AnotherPick) 和第二个一样

activity_another_pick.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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=".AnotherPick"
    android:padding="30dp"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_marginEnd="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_searchingName"/>

        <TextView
            android:id="@+id/ap_tv_empty"
            android:text="@string/tv_empty"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"/>

    </LinearLayout>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <TextView
            android:layout_marginEnd="10dp"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="@string/tv_inputPhoneNumber" />

        <EditText
            android:id="@+id/ap_et_inputPhoneNumber"
            android:hint="@string/et_input"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:importantForAutofill="no"
            android:inputType="phone" />

    </LinearLayout>

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/bt_return"
        android:onClick="returnTOMain"/>

</LinearLayout>

AnotherPick.java

package com.example.searchcontact;

import androidx.appcompat.app.AppCompatActivity;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class AnotherPick extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_another_pick);

        Intent intent = getIntent();
        String name = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);
        TextView textView = (TextView)findViewById(R.id.ap_tv_empty);
        textView.setText(name);
    }

    public void returnTOMain(View view) {
        EditText editText = (EditText)findViewById(R.id.ap_et_inputPhoneNumber);
        String phoneNumber = editText.getText().toString();
        Intent result = new Intent("com.example.RESULT_ACTION", Uri.parse(phoneNumber));
        setResult(Activity.RESULT_OK, result);
        finish();
    }
}

其他

AndroidManifest.xml 清单

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.searchcontact">

    <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=".AnotherPick" android:label="AnotherPick">
            <intent-filter>
                <action android:name="searchPhoneNumber" />

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

        <activity android:name=".PickContact" android:label="PickContact">
            <intent-filter>
                <action android:name="searchPhoneNumber" />

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

        <activity android:name=".MainActivity" android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

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

</manifest>

strings.xml

<resources>
    <string name="app_name">SearchContact</string>
    <string name="tv_name">姓名：</string>
    <string name="bt_search">查询</string>
    <string name="tv_phoneNumber">电话号码:</string>
    <string name="et_input">请输入</string>
    <string name="tv_searchingName">您要查询的姓名</string>
    <string name="tv_inputPhoneNumber">请输入电话号码</string>
    <string name="bt_return">返回</string>
    <string name="tv_empty">空</string>
</resources>

其他的没动.

End.

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【Android】关于 startActivityForResult 的一个小应用

Content

界面图

第一个Activity (SearchContact)

第二个Activity (PickContact)

第三个Activity (AnotherPick) 和第二个一样

其他

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