Java 使用imageview在android中显示图像
我一直试图在Java 使用imageview在android中显示图像,java,android,Java,Android,我一直试图在imageview中显示png图像(ic_menu_pic.png),但当我尝试运行时,结果是-(不幸的是,Testapp已停止) 这是我的Main.java文件 package com.myfile.isaac.testapp; import android.content.Intent; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.V
imageview
中显示png图像(ic_menu_pic.png),但当我尝试运行时,结果是-(不幸的是,Testapp已停止)
这是我的Main.java文件
package com.myfile.isaac.testapp;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView imageView =(ImageView)findViewById(R.id.imageView2);
}
public void onSend (View view){
Intent intent = new Intent(this, Activity2.class);
startActivity(intent);
}
}
以下是活动\u main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/re/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
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="com.myapp.isaac.testapp.MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/OKAY"
android:id="@+id/button"
android:onClick="onSend"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="@string/We_help_you_find_your_desired_House"
android:id="@+id/textView2"
android:layout_above="@+id/button"
android:layout_centerHorizontal="true"
android:layout_marginBottom="45dp"
android:textAlignment="center" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView2"
android:src="@drawable/ic_menu_pic"
android:layout_alignRight="@+id/textView2"
android:layout_alignEnd="@+id/textView2"
android:layout_above="@+id/textView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
我用其他一些.png图像尝试了你的代码,效果很好!! 可能您可以尝试更改图像一次。 看看下面这个
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="developer.bd.com.demo.MainActivity"
tools:showIn="@layout/activity_main">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="okay"
android:id="@+id/button"
android:onClick="onSend"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="We_help_you_find_your_desired_House"
android:id="@+id/textView2"
android:layout_above="@+id/button"
android:layout_centerHorizontal="true"
android:layout_marginBottom="45dp"
android:textAlignment="center" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView2"
android:src="@drawable/android"
android:layout_alignRight="@+id/textView2"
android:layout_alignEnd="@+id/textView2"
android:layout_above="@+id/textView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
</RelativeLayout>
从logcat发布您的整个堆栈跟踪。请发布您的logcat!!!我添加了我的日志的一部分,但它似乎没有结束。我已经发布了部分内容,当您将图像设置为imageview时,您的代码在哪里?i您没有将image
设置为imageView
任何位置。尝试以下操作:imageView.setImageResource(R.drawable.ic\u menu\u pic.png)
如果尚未将活动添加到清单中(Activity2.java)
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="developer.bd.com.demo.MainActivity"
tools:showIn="@layout/activity_main">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="okay"
android:id="@+id/button"
android:onClick="onSend"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceLarge"
android:text="We_help_you_find_your_desired_House"
android:id="@+id/textView2"
android:layout_above="@+id/button"
android:layout_centerHorizontal="true"
android:layout_marginBottom="45dp"
android:textAlignment="center" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="@+id/imageView2"
android:src="@drawable/android"
android:layout_alignRight="@+id/textView2"
android:layout_alignEnd="@+id/textView2"
android:layout_above="@+id/textView2"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true" />
</RelativeLayout>