ide 【Android Studio】实现简易猴子摘桃功能

\app\src\main\AndroidManifest.xml

package="com.example.peach">

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/Theme.Peach">

android:name=".MainActivity"

android:exported="true">

\app\src\main\java\com\example\peach\MainActivity.java

package com.example.peach;

import androidx.activity.result.ActivityResult;

import androidx.activity.result.ActivityResultCallback;

import androidx.activity.result.ActivityResultLauncher;

import androidx.activity.result.contract.ActivityResultContracts;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.os.Bundle;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

private Button pickBtn;

private TextView peachTotal;

int count=0;

private ActivityResultLauncher launcher = registerForActivityResult(new ActivityResultContracts.StartActivityForResult(), new ActivityResultCallback() {

@Override

public void onActivityResult(ActivityResult result) {

if(result != null){

if(result.getResultCode() == RESULT_OK){

Intent data = result.getData();

int peachNum = data.getIntExtra("peachNum", 0);

Log.i("MainActivity", "onActivityResult: "+ peachNum);

count = count + peachNum;

peachTotal.setText("桃子" + count + "个");

}

}

}

});

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

pickBtn = findViewById(R.id.pick_btn);

peachTotal = findViewById(R.id.peach_total);

pickBtn.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

Intent i = new Intent(MainActivity.this, PeachActivity.class);

launcher.launch(i);

}

});

}

}

\app\src\main\java\com\example\peach\PeachActivity.java

package com.example.peach;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.ImageView;

public class PeachActivity extends AppCompatActivity implements View.OnClickListener {

private ImageView peach1,peach2,peach3,peach4,peach5,peach6;

private Button exitBtn;

private int num = 0;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_peach);

peach1 = findViewById(R.id.peach1);

peach2 = findViewById(R.id.peach2);

peach3 = findViewById(R.id.peach3);

peach4 = findViewById(R.id.peach4);

peach5 = findViewById(R.id.peach5);

peach6 = findViewById(R.id.peach6);

exitBtn = findViewById(R.id.exit_btn);

peach1.setOnClickListener(this);

peach2.setOnClickListener(this);

peach3.setOnClickListener(this);

peach4.setOnClickListener(this);

peach5.setOnClickListener(this);

peach6.setOnClickListener(this);

exitBtn.setOnClickListener(this);

}

@Override

public void onClick(View view) {

if(view.getId() == R.id.peach1){

info(peach1);

}else if(view.getId() == R.id.peach2){

info(peach2);

}else if(view.getId() == R.id.peach3){

info(peach3);

}else if(view.getId() == R.id.peach4){

info(peach4);

}else if(view.getId() == R.id.peach5){

info(peach5);

}else if(view.getId() == R.id.peach6){

info(peach6);

}else if(view.getId() == R.id.exit_btn){

returnData();

}

}

private void returnData() {

Intent i = new Intent();

i.putExtra("peachNum", num);

setResult(RESULT_OK,i);

finish();

}

private void info(ImageView imageView) {

imageView.setVisibility(View.INVISIBLE);

num++;

}

@Override

public void onBackPressed() {

Intent i = new Intent();

i.putExtra("peachNum", num);

setResult(RESULT_OK,i);

finish();

}

}

\app\src\main\res\values\themes.xml

\app\src\main\res\layout\activity_main.xml

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=".MainActivity"

android:background="@drawable/bg">

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:background="@color/teal_700"

android:gravity="center"

android:padding="5dp"

android:text="首页"

android:textColor="#fff"

android:textSize="25sp" />

android:id="@+id/monkey"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/monkey"

android:layout_centerVertical="true"/>

android:id="@+id/pick_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignTop="@+id/monkey"

android:layout_toEndOf="@+id/monkey"

android:background="@drawable/btn_peach"

android:text="去桃园"

android:textSize="22sp" />

android:id="@+id/peach"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@+id/pick_btn"

android:layout_alignLeft="@+id/pick_btn"

android:layout_marginTop="50dp"

android:src="@drawable/peach_pic" />

android:id="@+id/peach_total"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignBottom="@+id/peach"

android:layout_toEndOf="@+id/peach"

android:text="摘到0个"

android:textSize="22sp" />

\app\src\main\res\layout\activity_peach.xml

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=".PeachActivity"

android:background="@drawable/tree_bg">

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:background="@color/teal_700"

android:gravity="center"

android:padding="5dp"

android:text="桃园"

android:textColor="#fff"

android:textSize="25sp" />

android:id="@+id/tree"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_centerInParent="true"

android:src="@drawable/tree" />

android:id="@+id/peach1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignTop="@+id/tree"

android:layout_centerHorizontal="true"

android:layout_marginTop="30dp"

android:src="@drawable/peach_pic" />

android:id="@+id/peach2"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@+id/peach1"

android:layout_alignLeft="@+id/tree"

android:layout_marginLeft="50dp"

android:src="@drawable/peach_pic" />

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/peach_pic"

android:id="@+id/peach3"

android:layout_below="@+id/peach1"

android:layout_alignRight="@+id/tree"

android:layout_marginRight="50dp"/>

android:id="@+id/peach4"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@+id/peach2"

android:layout_centerHorizontal="true"

android:src="@drawable/peach_pic" />

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:src="@drawable/peach_pic"

android:id="@+id/peach5"

android:layout_below="@+id/peach2"

android:layout_toStartOf="@+id/peach4"

android:layout_marginRight="25dp"/>

android:id="@+id/peach6"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_below="@+id/peach2"

android:layout_toEndOf="@+id/peach4"

android:src="@drawable/peach_pic"

android:layout_marginLeft="20dp"/>

android:id="@+id/exit_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentRight="true"

android:layout_alignParentBottom="true"

android:layout_marginBottom="50dp"

android:background="@drawable/btn_peach"

android:text="退出桃园"

android:textSize="22sp" />

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