如何在Android的活动/屏幕之间切换 [英] How to switch between activities/screens in Android
本文介绍了如何在Android的活动/屏幕之间切换的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我的第一个活动XM
<RelativeLayout 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"
android:background="#a5c63b"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/btn1"
android:layout_width="match_parent"
android:layout_height="70dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="70dp"
android:background="#434d23"
android:text="Ok To Continue"
android:onClick="frontt"
android:textColor="#a5c63b" />
<ImageView
android:id="@+id/imageView11"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:src="@drawable/question" />
<TextView
android:id="@+id/txtview11"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:text="Loading..."
android:textSize="12dp" />
</RelativeLayout>
这是我的第二个活动XML
This is my Second Activity Xml
<RelativeLayout 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"
android:background="#a5c63b"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/btn"
android:layout_width="match_parent"
android:layout_height="70dp"
android:onClick="onClick"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:layout_marginTop="70dp"
android:background="#434d23"
android:text="OK"
android:textColor="#a5c63b" />
<EditText
android:id="@+id/txtedit"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_alignLeft="@+id/button1"
android:layout_alignParentTop="true"
android:layout_marginTop="50dp"
android:background="#edf2db"
android:ems="10"
android:inputType="numberDecimal" />
<ImageView
android:id="@+id/imageView1"
android:layout_width="250dp"
android:layout_height="250dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:src="@drawable/question" />
<TextView
android:id="@+id/txtview"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_alignBottom="@+id/txtedit"
android:layout_alignLeft="@+id/txtedit"
android:layout_marginBottom="21dp"
android:text="Guess Single Digit Number"
android:textSize="12dp" />
<TextView
android:id="@+id/txtview2"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_alignLeft="@+id/btn"
android:layout_below="@+id/btn"
android:text="TextView" />
</RelativeLayout>
这是我的第一个Java文件code
this is my first java file code
package com.example.game;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.widget.Button;
public class MainActivity extends Activity {
MediaPlayer btnsound;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.front);
Button next = (Button) findViewById(R.id.btn1);
btnsound = MediaPlayer.create(MainActivity.this,R.raw.game);
btnsound.start();
next.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
Intent nextScreen = new Intent(getApplicationContext(), CopyOfMainActivity.class);
startActivity(nextScreen);
//finish();
}
} );
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
这是我第二次的java文件
this is my Second java file
package com.example.game;
import java.util.Random;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;
import android.app.Activity;
import android.view.Menu;
public class CopyOfMainActivity extends Activity {
MediaPlayer btnsound;
Random random = new Random();
int randnumber = random.nextInt(10);
Button b2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnsound = MediaPlayer.create(CopyOfMainActivity.this,R.raw.game);
btnsound.start();
b2= (Button) findViewById(R.id.btn);
b2.setOnClickListener(new OnClickListener()
{
public void onClick(View v)
{
EditText input = (EditText)findViewById(R.id.txtedit);
TextView resultText = (TextView) findViewById(R.id.txtview2);
String inputstring = input.getText().toString();
int number = Integer.parseInt(inputstring);
if(randnumber==number)
{
resultText.setText("you win" );
ImageView image = (ImageView) findViewById(R.id.imageView1);
image.setImageResource(R.drawable.win);
}
else if (number>randnumber)
{
resultText.setText("you guess high number" );
ImageView image = (ImageView) findViewById(R.id.imageView1);
image.setImageResource(R.drawable.tryagain);
}
else if (number<randnumber)
{
resultText.setText("you guess low number" );
ImageView image = (ImageView) findViewById(R.id.imageView1);
image.setImageResource(R.drawable.lose);
}
}
} );
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
我的第一个活动XML布局的一个按钮后，运行应用程序。第一个活动的布局显示，但每当我点击的第一个XML按钮，先想一下，此错误显示在LogCat中选项卡后，去下一个laytout和应用程序停止工作。
I have one button on First Activity xml layout .The first Activity Layout display after run application but whenever i click on button on first xml first want to go on next laytout after clicking then this error show in LogCat tab and application stop working.
AndroidRuntime在dalvik.system.NativeStart.main（本机方法）
AndroidRuntime at dalvik.system.NativeStart.main(Native Method)
我应该怎么办？
推荐答案
请添加两个活动清单文件，如果你错过了。
Please add your both activities to Manifest file if you missed out.
<application>
<activity android:name="Activity1">
</activity>
<activity android:name="Activity2">
</activity>
这篇关于如何在Android的活动/屏幕之间切换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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