Java 在运行时更新或更改视图中的图像
我在OnClick事件中更新UI时有点问题 当我这样做时:Java 在运行时更新或更改视图中的图像,java,android,Java,Android,我在OnClick事件中更新UI时有点问题 当我这样做时: case R.id.radStripMiningCoal : { LinearLayout testLayout = (LinearLayout)findViewById(R.id.layouttest); LinearLayout layout3 = (LinearLayout)findViewById(R.id.layout2); LinearLayout layout
case R.id.radStripMiningCoal :
{
LinearLayout testLayout = (LinearLayout)findViewById(R.id.layouttest);
LinearLayout layout3 = (LinearLayout)findViewById(R.id.layout2);
LinearLayout layout4 = (LinearLayout)findViewById(R.id.layout3);
LinearLayout layout = (LinearLayout)findViewById(R.id.recomended);
LinearLayout layout2 = (LinearLayout)findViewById(R.id.basic);
int origWidth = getWindowManager().getDefaultDisplay().getWidth();
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(origWidth,LayoutParams.WRAP_CONTENT);
layout2.setLayoutParams(params);
layout.setLayoutParams(params);
testLayout.setLayoutParams(params);
layout3.setLayoutParams(params);
layout4.setLayoutParams(params);
stripminingcoal.setVisibility(View.VISIBLE);
VSLists.setVisibility(View.GONE);
Next.setVisibility(View.GONE);
AnimationDrawable animation = new AnimationDrawable();
animation.addFrame(getResources().getDrawable(R.drawable.multispd1), 5000);
animation.addFrame(getResources().getDrawable(R.drawable.img1), 5000);
animation.addFrame(getResources().getDrawable(R.drawable.shocktubecluster1), 5000);
animation.setOneShot(false);
ImageView imageAnim = (ImageView) findViewById(R.id.imgBasicIS);
imageAnim.setBackgroundDrawable(animation);
animation.start();
AnimationDrawable animation2 = new AnimationDrawable();
animation2.addFrame(getResources().getDrawable(R.drawable.unidelaysp), 5000);
animation2.addFrame(getResources().getDrawable(R.drawable.trunkline), 5000);
animation2.setOneShot(false);
ImageView imageAnim2 = (ImageView) findViewById(R.id.imgRecomendedIS);
imageAnim2.setBackgroundDrawable(animation2);
animation2.start();
AnimationDrawable animation3 = new AnimationDrawable();
animation3.addFrame(getResources().getDrawable(R.drawable.leadin2), 5000);
animation3.addFrame(getResources().getDrawable(R.drawable.tubestarter),5000);
animation3.setOneShot(false);
ImageView imageAnim3 = (ImageView) findViewById(R.id.imgRecomendedBSS);
imageAnim3.setBackgroundDrawable(animation3);
animation3.start();
txtBasicIS.setText("Shock Tube Multi SPD / Detonating Cord / Cluster");
txtRecomendedIS.setText("Shock Tube Uni-Delay SP / Trunkline");
txtRecomendedBSS.setText("Lead-In Line / Electric Shock Tube Starter");
一切更新和显示良好。
但只要我在不同的“案例”中使用相同的代码,它就不会将图像更新为新图像:
case R.id.radNarrowReefGold:
{
LinearLayout testLayout = (LinearLayout)findViewById(R.id.layouttest);
LinearLayout layout3 = (LinearLayout)findViewById(R.id.layout2);
LinearLayout layout4 = (LinearLayout)findViewById(R.id.layout3);
LinearLayout layout = (LinearLayout)findViewById(R.id.recomended);
LinearLayout layout2 = (LinearLayout)findViewById(R.id.basic);
int origWidth = getWindowManager().getDefaultDisplay().getWidth();
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(origWidth,LayoutParams.WRAP_CONTENT);
layout2.setLayoutParams(params);
layout.setLayoutParams(params);
testLayout.setLayoutParams(params);
layout3.setLayoutParams(params);
layout4.setLayoutParams(params);
stripminingcoal.setVisibility(View.VISIBLE);
VSLists.setVisibility(View.GONE);
Next.setVisibility(View.GONE);
AnimationDrawable animation = new AnimationDrawable();
animation.addFrame(getResources().getDrawable(R.drawable.udlp3), 5000);
animation.addFrame(getResources().getDrawable(R.drawable.udlp6), 5000);
animation.addFrame(getResources().getDrawable(R.drawable.trunkline), 5000);
animation.setOneShot(false);
ImageView imageAnim = (ImageView) findViewById(R.id.imgBasicIS);
imageAnim.setBackgroundDrawable(animation);
animation.start();
AnimationDrawable animation2 = new AnimationDrawable();
animation2.addFrame(getResources().getDrawable(R.drawable.udlp3vivid), 5000);
animation2.addFrame(getResources().getDrawable(R.drawable.udlp6vivid), 5000);
animation2.addFrame(getResources().getDrawable(R.drawable.trunkline), 5000);
animation2.setOneShot(false);
ImageView imageAnim2 = (ImageView) findViewById(R.id.imgRecomendedIS);
imageAnim2.setBackgroundDrawable(animation2);
animation2.start();
AnimationDrawable animation3 = new AnimationDrawable();
animation3.addFrame(getResources().getDrawable(R.drawable.leadin2), 5000);
animation3.addFrame(getResources().getDrawable(R.drawable.tubestarter),5000);
animation3.setOneShot(false);
ImageView imageAnim3 = (ImageView) findViewById(R.id.imgRecomendedBSS);
imageAnim3.setBackgroundDrawable(animation3);
animation3.start();
txtBasicIS.setText("Uni-Delay LP (3) / Uni-Delay LP (6) / Trunkline");
txtRecomendedIS.setText("Shock Tube Uni-Delay SP / Trunkline");
txtRecomendedBSS.setText("Lead-In Line / Electric Shock Tube Starter");
}
我错过了什么或做错了什么
文本视图也不会改变
提前谢谢。
Patrick这是由于您的switch case结构中缺少“break;”语句造成的
您可以使用我动态编写的以下小片段来测试这一点。如果你移除了断点;声明,你无法将文本切换到梅西,它只显示罗纳尔多。换句话说,逻辑被打破了
如果有“突破”,你可以在梅西和罗纳尔多之间切换
MainActivity.java
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class MainActivity extends Activity implements OnClickListener{
TextView myText;
private Button b1;
private Button b2;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
myText = (TextView)this.findViewById(R.id.textView1);
b1 = (Button)this.findViewById(R.id.buttonMessi);
b1.setOnClickListener(this);
b2 = (Button)this.findViewById(R.id.buttonRonaldo);
b2.setOnClickListener(this);
}
@Override
public void onClick(View v) {
switch(v.getId()) {
case R.id.buttonMessi:
myText.setText("MESSI");
break;
case R.id.buttonRonaldo:
myText.setText("RONALDO");
break;
}
}
}
activity_main.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"
tools:context=".MainActivity" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="@string/hello_world" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:orientation="horizontal">
<Button
android:id="@+id/buttonMessi"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView1"
android:layout_alignRight="@+id/textView1"
android:layout_marginBottom="40dp"
android:text="Messi" />
<Button
android:id="@+id/buttonRonaldo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="@+id/textView1"
android:layout_alignRight="@+id/textView1"
android:layout_marginBottom="40dp"
android:text="Ronaldo" />
</LinearLayout>
</RelativeLayout>
尝试添加img.SetImageResource(0);在前一行之前。
它为你赢得了荣誉难道你就错过了
休息时间吗代码>案例末尾的语句
块谢谢。就这样。。。愚蠢的新手错误!faceDesk的复制品可能是如此愚蠢的新手错误!谢谢你的指南针!它总是发生,这就是为什么编码如此有趣:)只是一个问题。如何在没有动画设置的情况下更改Imageview源。例如img.SetImageResource(R.drawable.img);?是,使用img.SetImageResource(R.drawable.img);如果这不起作用。尝试添加img.SetImageResource(0);在前一行之前。这有点像是重置了可拉伸的。