Question

我是开发Android应用的新手，我试图直接从资源设置背景，并且我一直在获得此异常。

MainActivity.java

package imed.aouidene.com.wallpaper;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.WindowManager;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
  Button next;
  int count;
  int tab[] = new int[3];

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    getSupportActionBar().hide();
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setContentView(R.layout.activity_main);

    count = 0 ;
    String s = "" ;

    for(int i=0;i<3;i++){
        s="drawable/image"+(i+1)+".jpg";
        tab[i]=getResources().getIdentifier(s,"drawable",getPackageName());
    }

    getWindow().setBackgroundDrawableResource(tab[count]);


    next = (Button) findViewById(R.id.nextbutton);
    next.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (count < 2) {
                count++;
            } else {
                count = 0;
            }
            getWindow().setBackgroundDrawableResource(tab[count]);
        }
    });
}
}

问题在于：的 getWindow（）setBackgroundDrawableResource（标签[COUNT]）;

Answer 1

你应该改变这样：

s = "image"+(i+1);

获取资源名称！

从ressources设置背景：资源$ NotFoundException

1 个答案: