Android 如何从XML调整ImageView的大小？

我想在Java活动中从XML调整ImageView的大小（高度和宽度）。我该怎么做

private ImageView imageView;
imageView = (ImageView) findViewById(R.id.imageView);

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通过xml设置宽度和高度：

<ImageView
   android:id="@+id/imgLauncher"
   android:layout_width="50dip"
   android:layout_height="50dip"
   android:src="@drawable/ic_launcher" />

绑定查看

imgLauncher = (ImageView)findViewById(R.id.imgLauncher);

通过布局参数设置宽度和高度

imgLauncher.getLayoutParams().height = 20;
imgLauncher.getLayoutParams().width = 20;

刷新设置布局参数后查看

imgLauncher.requestLayout();

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完成

只需在活动中添加代码即可

Display display = getWindowManager().getDefaultDisplay();
ImageView iv = (LinearLayout) findViewById(R.id.ivMyImage);
int width = 30; 
int height = 30;
LinearLayout.LayoutParams parms = new LinearLayout.LayoutParams(width,height);
iv.setLayoutParams(parms);

---

@帕布罗维拉，很高兴帮助你。：）

Display display = getWindowManager().getDefaultDisplay();
ImageView iv = (LinearLayout) findViewById(R.id.ivMyImage);
int width = 30; 
int height = 30;
LinearLayout.LayoutParams parms = new LinearLayout.LayoutParams(width,height);
iv.setLayoutParams(parms);